20396860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30406340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 29, 44, 46, 55, 58, 92, 110, 115, 116, 139, 145, 220, 230, 253, 278, 290, 319, 460, 506, 556, 580, 638, 667, 695, 1012, 1265, 1276, 1334, 1390, 1529, 1595, 2530, 2668, 2780, 3058, 3190, 3197, 3335, 4031, 5060, 6116, 6380, 6394, 6670, 7337, 7645, 8062, 12788, 13340, 14674, 15290, 15985, 16124, 20155, 29348, 30580, 31970, 35167, 36685, 40310, 44341, 63940, 70334, 73370, 80620, 88682, 92713, 140668, 146740, 175835, 177364, 185426, 221705, 351670, 370852, 443410, 463565, 703340, 886820, 927130, 1019843, 1854260, 2039686, 4079372, 5099215, 10198430, 20396860]

約数ペア:

[(1, 20396860), (2, 10198430), (4, 5099215), (5, 4079372), (10, 2039686), (11, 1854260), (20, 1019843), (22, 927130), (23, 886820), (29, 703340), (44, 463565), (46, 443410), (55, 370852), (58, 351670), (92, 221705), (110, 185426), (115, 177364), (116, 175835), (139, 146740), (145, 140668), (220, 92713), (230, 88682), (253, 80620), (278, 73370), (290, 70334), (319, 63940), (460, 44341), (506, 40310), (556, 36685), (580, 35167), (638, 31970), (667, 30580), (695, 29348), (1012, 20155), (1265, 16124), (1276, 15985), (1334, 15290), (1390, 14674), (1529, 13340), (1595, 12788), (2530, 8062), (2668, 7645), (2780, 7337), (3058, 6670), (3190, 6394), (3197, 6380), (3335, 6116), (4031, 5060)]