1680459560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2153}}^1$

素因数の和:2275

約数の個数: 128

約数和(自身を含む): 4342464000

約数和(自身を除く): 2662004440

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 79, 95, 104, 130, 152, 158, 190, 247, 260, 316, 380, 395, 494, 520, 632, 760, 790, 988, 1027, 1235, 1501, 1580, 1976, 2054, 2153, 2470, 3002, 3160, 4108, 4306, 4940, 5135, 6004, 7505, 8216, 8612, 9880, 10270, 10765, 12008, 15010, 17224, 19513, 20540, 21530, 27989, 30020, 39026, 40907, 41080, 43060, 55978, 60040, 78052, 81814, 86120, 97565, 111956, 139945, 156104, 163628, 170087, 195130, 204535, 223912, 279890, 327256, 340174, 390260, 409070, 531791, 559780, 680348, 780520, 818140, 850435, 1063582, 1119560, 1360696, 1636280, 1700870, 2127164, 2211131, 2658955, 3231653, 3401740, 4254328, 4422262, 5317910, 6463306, 6803480, 8844524, 10635820, 11055655, 12926612, 16158265, 17689048, 21271640, 22111310, 25853224, 32316530, 42011489, 44222620, 64633060, 84022978, 88445240, 129266120, 168045956, 210057445, 336091912, 420114890, 840229780, 1680459560]

約数ペア:

[(1, 1680459560), (2, 840229780), (4, 420114890), (5, 336091912), (8, 210057445), (10, 168045956), (13, 129266120), (19, 88445240), (20, 84022978), (26, 64633060), (38, 44222620), (40, 42011489), (52, 32316530), (65, 25853224), (76, 22111310), (79, 21271640), (95, 17689048), (104, 16158265), (130, 12926612), (152, 11055655), (158, 10635820), (190, 8844524), (247, 6803480), (260, 6463306), (316, 5317910), (380, 4422262), (395, 4254328), (494, 3401740), (520, 3231653), (632, 2658955), (760, 2211131), (790, 2127164), (988, 1700870), (1027, 1636280), (1235, 1360696), (1501, 1119560), (1580, 1063582), (1976, 850435), (2054, 818140), (2153, 780520), (2470, 680348), (3002, 559780), (3160, 531791), (4108, 409070), (4306, 390260), (4940, 340174), (5135, 327256), (6004, 279890), (7505, 223912), (8216, 204535), (8612, 195130), (9880, 170087), (10270, 163628), (10765, 156104), (12008, 139945), (15010, 111956), (17224, 97565), (19513, 86120), (20540, 81814), (21530, 78052), (27989, 60040), (30020, 55978), (39026, 43060), (40907, 41080)]