221291640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:378

約数の個数: 192

約数和(自身を含む): 754790400

約数和(自身を除く): 533498760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 31, 36, 40, 45, 60, 62, 72, 79, 90, 93, 120, 124, 155, 158, 180, 186, 237, 248, 251, 279, 310, 316, 360, 372, 395, 465, 474, 502, 558, 620, 632, 711, 744, 753, 790, 930, 948, 1004, 1116, 1185, 1240, 1255, 1395, 1422, 1506, 1580, 1860, 1896, 2008, 2232, 2259, 2370, 2449, 2510, 2790, 2844, 3012, 3160, 3555, 3720, 3765, 4518, 4740, 4898, 5020, 5580, 5688, 6024, 7110, 7347, 7530, 7781, 9036, 9480, 9796, 10040, 11160, 11295, 12245, 14220, 14694, 15060, 15562, 18072, 19592, 19829, 22041, 22590, 23343, 24490, 28440, 29388, 30120, 31124, 36735, 38905, 39658, 44082, 45180, 46686, 48980, 58776, 59487, 62248, 70029, 73470, 77810, 79316, 88164, 90360, 93372, 97960, 99145, 110205, 116715, 118974, 140058, 146940, 155620, 158632, 176328, 178461, 186744, 198290, 220410, 233430, 237948, 280116, 293880, 297435, 311240, 350145, 356922, 396580, 440820, 466860, 475896, 560232, 594870, 614699, 700290, 713844, 793160, 881640, 892305, 933720, 1189740, 1229398, 1400580, 1427688, 1784610, 1844097, 2379480, 2458796, 2801160, 3073495, 3569220, 3688194, 4917592, 5532291, 6146990, 7138440, 7376388, 9220485, 11064582, 12293980, 14752776, 18440970, 22129164, 24587960, 27661455, 36881940, 44258328, 55322910, 73763880, 110645820, 221291640]

約数ペア:

[(1, 221291640), (2, 110645820), (3, 73763880), (4, 55322910), (5, 44258328), (6, 36881940), (8, 27661455), (9, 24587960), (10, 22129164), (12, 18440970), (15, 14752776), (18, 12293980), (20, 11064582), (24, 9220485), (30, 7376388), (31, 7138440), (36, 6146990), (40, 5532291), (45, 4917592), (60, 3688194), (62, 3569220), (72, 3073495), (79, 2801160), (90, 2458796), (93, 2379480), (120, 1844097), (124, 1784610), (155, 1427688), (158, 1400580), (180, 1229398), (186, 1189740), (237, 933720), (248, 892305), (251, 881640), (279, 793160), (310, 713844), (316, 700290), (360, 614699), (372, 594870), (395, 560232), (465, 475896), (474, 466860), (502, 440820), (558, 396580), (620, 356922), (632, 350145), (711, 311240), (744, 297435), (753, 293880), (790, 280116), (930, 237948), (948, 233430), (1004, 220410), (1116, 198290), (1185, 186744), (1240, 178461), (1255, 176328), (1395, 158632), (1422, 155620), (1506, 146940), (1580, 140058), (1860, 118974), (1896, 116715), (2008, 110205), (2232, 99145), (2259, 97960), (2370, 93372), (2449, 90360), (2510, 88164), (2790, 79316), (2844, 77810), (3012, 73470), (3160, 70029), (3555, 62248), (3720, 59487), (3765, 58776), (4518, 48980), (4740, 46686), (4898, 45180), (5020, 44082), (5580, 39658), (5688, 38905), (6024, 36735), (7110, 31124), (7347, 30120), (7530, 29388), (7781, 28440), (9036, 24490), (9480, 23343), (9796, 22590), (10040, 22041), (11160, 19829), (11295, 19592), (12245, 18072), (14220, 15562), (14694, 15060)]