31913980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 96

約数和(自身を含む): 80744832

約数和(自身を除く): 48830852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 61, 70, 74, 101, 122, 140, 148, 185, 202, 244, 259, 305, 370, 404, 427, 505, 518, 610, 707, 740, 854, 1010, 1036, 1220, 1295, 1414, 1708, 2020, 2135, 2257, 2590, 2828, 3535, 3737, 4270, 4514, 5180, 6161, 7070, 7474, 8540, 9028, 11285, 12322, 14140, 14948, 15799, 18685, 22570, 24644, 26159, 30805, 31598, 37370, 43127, 45140, 52318, 61610, 63196, 74740, 78995, 86254, 104636, 123220, 130795, 157990, 172508, 215635, 227957, 261590, 315980, 431270, 455914, 523180, 862540, 911828, 1139785, 1595699, 2279570, 3191398, 4559140, 6382796, 7978495, 15956990, 31913980]

約数ペア:

[(1, 31913980), (2, 15956990), (4, 7978495), (5, 6382796), (7, 4559140), (10, 3191398), (14, 2279570), (20, 1595699), (28, 1139785), (35, 911828), (37, 862540), (61, 523180), (70, 455914), (74, 431270), (101, 315980), (122, 261590), (140, 227957), (148, 215635), (185, 172508), (202, 157990), (244, 130795), (259, 123220), (305, 104636), (370, 86254), (404, 78995), (427, 74740), (505, 63196), (518, 61610), (610, 52318), (707, 45140), (740, 43127), (854, 37370), (1010, 31598), (1036, 30805), (1220, 26159), (1295, 24644), (1414, 22570), (1708, 18685), (2020, 15799), (2135, 14948), (2257, 14140), (2590, 12322), (2828, 11285), (3535, 9028), (3737, 8540), (4270, 7474), (4514, 7070), (5180, 6161)]