31138640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:484

約数の個数: 80

約数和(自身を含む): 79161600

約数和(自身を除く): 48022960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 260, 316, 379, 395, 520, 632, 758, 790, 1027, 1040, 1264, 1516, 1580, 1895, 2054, 3032, 3160, 3790, 4108, 4927, 5135, 6064, 6320, 7580, 8216, 9854, 10270, 15160, 16432, 19708, 20540, 24635, 29941, 30320, 39416, 41080, 49270, 59882, 78832, 82160, 98540, 119764, 149705, 197080, 239528, 299410, 389233, 394160, 479056, 598820, 778466, 1197640, 1556932, 1946165, 2395280, 3113864, 3892330, 6227728, 7784660, 15569320, 31138640]

約数ペア:

[(1, 31138640), (2, 15569320), (4, 7784660), (5, 6227728), (8, 3892330), (10, 3113864), (13, 2395280), (16, 1946165), (20, 1556932), (26, 1197640), (40, 778466), (52, 598820), (65, 479056), (79, 394160), (80, 389233), (104, 299410), (130, 239528), (158, 197080), (208, 149705), (260, 119764), (316, 98540), (379, 82160), (395, 78832), (520, 59882), (632, 49270), (758, 41080), (790, 39416), (1027, 30320), (1040, 29941), (1264, 24635), (1516, 20540), (1580, 19708), (1895, 16432), (2054, 15160), (3032, 10270), (3160, 9854), (3790, 8216), (4108, 7580), (4927, 6320), (5135, 6064)]