399436240

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 240

約数和(自身を含む): 1180638720

約数和(自身を除く): 781202480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 49, 56, 62, 70, 76, 80, 95, 98, 112, 124, 133, 140, 152, 155, 173, 190, 196, 217, 245, 248, 266, 280, 304, 310, 346, 380, 392, 434, 490, 496, 532, 560, 589, 620, 665, 692, 760, 784, 865, 868, 931, 980, 1064, 1085, 1178, 1211, 1240, 1330, 1384, 1519, 1520, 1730, 1736, 1862, 1960, 2128, 2170, 2356, 2422, 2480, 2660, 2768, 2945, 3038, 3287, 3460, 3472, 3724, 3920, 4123, 4340, 4655, 4712, 4844, 5320, 5363, 5890, 6055, 6076, 6574, 6920, 7448, 7595, 8246, 8477, 8680, 9310, 9424, 9688, 10640, 10726, 11780, 12110, 12152, 13148, 13840, 14896, 15190, 16435, 16492, 16954, 17360, 18620, 19376, 20615, 21452, 23009, 23560, 24220, 24304, 26296, 26815, 28861, 30380, 32870, 32984, 33908, 37240, 37541, 41230, 42385, 42904, 46018, 47120, 48440, 52592, 53630, 57722, 60760, 65740, 65968, 67816, 74480, 75082, 82460, 84770, 85808, 92036, 96880, 101897, 107260, 115045, 115444, 121520, 131480, 135632, 144305, 150164, 161063, 164920, 169540, 184072, 187705, 203794, 214520, 230090, 230888, 262787, 262960, 288610, 300328, 322126, 329840, 339080, 368144, 375410, 407588, 429040, 460180, 461776, 509485, 525574, 577220, 600656, 644252, 678160, 713279, 750820, 805315, 815176, 920360, 1018970, 1051148, 1154440, 1288504, 1313935, 1426558, 1501640, 1610630, 1630352, 1840720, 2037940, 2102296, 2308880, 2577008, 2627870, 2853116, 3003280, 3221260, 3566395, 4075880, 4204592, 4992953, 5255740, 5706232, 6442520, 7132790, 8151760, 9985906, 10511480, 11412464, 12885040, 14265580, 19971812, 21022960, 24964765, 28531160, 39943624, 49929530, 57062320, 79887248, 99859060, 199718120, 399436240]

約数ペア:

[(1, 399436240), (2, 199718120), (4, 99859060), (5, 79887248), (7, 57062320), (8, 49929530), (10, 39943624), (14, 28531160), (16, 24964765), (19, 21022960), (20, 19971812), (28, 14265580), (31, 12885040), (35, 11412464), (38, 10511480), (40, 9985906), (49, 8151760), (56, 7132790), (62, 6442520), (70, 5706232), (76, 5255740), (80, 4992953), (95, 4204592), (98, 4075880), (112, 3566395), (124, 3221260), (133, 3003280), (140, 2853116), (152, 2627870), (155, 2577008), (173, 2308880), (190, 2102296), (196, 2037940), (217, 1840720), (245, 1630352), (248, 1610630), (266, 1501640), (280, 1426558), (304, 1313935), (310, 1288504), (346, 1154440), (380, 1051148), (392, 1018970), (434, 920360), (490, 815176), (496, 805315), (532, 750820), (560, 713279), (589, 678160), (620, 644252), (665, 600656), (692, 577220), (760, 525574), (784, 509485), (865, 461776), (868, 460180), (931, 429040), (980, 407588), (1064, 375410), (1085, 368144), (1178, 339080), (1211, 329840), (1240, 322126), (1330, 300328), (1384, 288610), (1519, 262960), (1520, 262787), (1730, 230888), (1736, 230090), (1862, 214520), (1960, 203794), (2128, 187705), (2170, 184072), (2356, 169540), (2422, 164920), (2480, 161063), (2660, 150164), (2768, 144305), (2945, 135632), (3038, 131480), (3287, 121520), (3460, 115444), (3472, 115045), (3724, 107260), (3920, 101897), (4123, 96880), (4340, 92036), (4655, 85808), (4712, 84770), (4844, 82460), (5320, 75082), (5363, 74480), (5890, 67816), (6055, 65968), (6076, 65740), (6574, 60760), (6920, 57722), (7448, 53630), (7595, 52592), (8246, 48440), (8477, 47120), (8680, 46018), (9310, 42904), (9424, 42385), (9688, 41230), (10640, 37541), (10726, 37240), (11780, 33908), (12110, 32984), (12152, 32870), (13148, 30380), (13840, 28861), (14896, 26815), (15190, 26296), (16435, 24304), (16492, 24220), (16954, 23560), (17360, 23009), (18620, 21452), (19376, 20615)]