638405320

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 256

約数和(自身を含む): 1843200000

約数和(自身を除く): 1204794680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 31, 35, 38, 40, 49, 56, 62, 70, 76, 79, 95, 98, 124, 133, 140, 152, 155, 158, 190, 196, 217, 245, 248, 266, 280, 310, 316, 343, 380, 392, 395, 434, 490, 532, 553, 589, 620, 632, 665, 686, 760, 790, 868, 931, 980, 1064, 1085, 1106, 1178, 1240, 1330, 1372, 1501, 1519, 1580, 1715, 1736, 1862, 1960, 2170, 2212, 2356, 2449, 2660, 2744, 2765, 2945, 3002, 3038, 3160, 3430, 3724, 3871, 4123, 4340, 4424, 4655, 4712, 4898, 5320, 5530, 5890, 6004, 6076, 6517, 6860, 7448, 7505, 7595, 7742, 8246, 8680, 9310, 9796, 10507, 10633, 11060, 11780, 12008, 12152, 12245, 13034, 13720, 15010, 15190, 15484, 16492, 17143, 18620, 19355, 19592, 20615, 21014, 21266, 22120, 23560, 24490, 26068, 27097, 28861, 30020, 30380, 30968, 32585, 32984, 34286, 37240, 38710, 41230, 42028, 42532, 46531, 48980, 52136, 52535, 53165, 54194, 57722, 60040, 60760, 65170, 68572, 73549, 77420, 82460, 84056, 85064, 85715, 93062, 97960, 105070, 106330, 108388, 115444, 120001, 130340, 135485, 137144, 144305, 147098, 154840, 164920, 171430, 186124, 202027, 210140, 212660, 216776, 230888, 232655, 240002, 260680, 270970, 288610, 294196, 325717, 342860, 367745, 372248, 404054, 420280, 425320, 465310, 480004, 514843, 541940, 577220, 588392, 600005, 651434, 685720, 735490, 808108, 840007, 930620, 960008, 1010135, 1029686, 1083880, 1154440, 1200010, 1302868, 1470980, 1616216, 1628585, 1680014, 1861240, 2020270, 2059372, 2280019, 2400020, 2574215, 2605736, 2941960, 3257170, 3360028, 4040540, 4118744, 4200035, 4560038, 4800040, 5148430, 6514340, 6720056, 8081080, 8400070, 9120076, 10296860, 11400095, 13028680, 15960133, 16800140, 18240152, 20593720, 22800190, 31920266, 33600280, 45600380, 63840532, 79800665, 91200760, 127681064, 159601330, 319202660, 638405320]

約数ペア:

[(1, 638405320), (2, 319202660), (4, 159601330), (5, 127681064), (7, 91200760), (8, 79800665), (10, 63840532), (14, 45600380), (19, 33600280), (20, 31920266), (28, 22800190), (31, 20593720), (35, 18240152), (38, 16800140), (40, 15960133), (49, 13028680), (56, 11400095), (62, 10296860), (70, 9120076), (76, 8400070), (79, 8081080), (95, 6720056), (98, 6514340), (124, 5148430), (133, 4800040), (140, 4560038), (152, 4200035), (155, 4118744), (158, 4040540), (190, 3360028), (196, 3257170), (217, 2941960), (245, 2605736), (248, 2574215), (266, 2400020), (280, 2280019), (310, 2059372), (316, 2020270), (343, 1861240), (380, 1680014), (392, 1628585), (395, 1616216), (434, 1470980), (490, 1302868), (532, 1200010), (553, 1154440), (589, 1083880), (620, 1029686), (632, 1010135), (665, 960008), (686, 930620), (760, 840007), (790, 808108), (868, 735490), (931, 685720), (980, 651434), (1064, 600005), (1085, 588392), (1106, 577220), (1178, 541940), (1240, 514843), (1330, 480004), (1372, 465310), (1501, 425320), (1519, 420280), (1580, 404054), (1715, 372248), (1736, 367745), (1862, 342860), (1960, 325717), (2170, 294196), (2212, 288610), (2356, 270970), (2449, 260680), (2660, 240002), (2744, 232655), (2765, 230888), (2945, 216776), (3002, 212660), (3038, 210140), (3160, 202027), (3430, 186124), (3724, 171430), (3871, 164920), (4123, 154840), (4340, 147098), (4424, 144305), (4655, 137144), (4712, 135485), (4898, 130340), (5320, 120001), (5530, 115444), (5890, 108388), (6004, 106330), (6076, 105070), (6517, 97960), (6860, 93062), (7448, 85715), (7505, 85064), (7595, 84056), (7742, 82460), (8246, 77420), (8680, 73549), (9310, 68572), (9796, 65170), (10507, 60760), (10633, 60040), (11060, 57722), (11780, 54194), (12008, 53165), (12152, 52535), (12245, 52136), (13034, 48980), (13720, 46531), (15010, 42532), (15190, 42028), (15484, 41230), (16492, 38710), (17143, 37240), (18620, 34286), (19355, 32984), (19592, 32585), (20615, 30968), (21014, 30380), (21266, 30020), (22120, 28861), (23560, 27097), (24490, 26068)]