20154294740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{199429}}^1$

素因数の和:199632

約数の個数: 48

約数和(自身を含む): 43957562880

約数和(自身を除く): 23803268140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 310, 326, 620, 652, 815, 1630, 3260, 5053, 10106, 20212, 25265, 50530, 101060, 199429, 398858, 797716, 997145, 1994290, 3988580, 6182299, 12364598, 24729196, 30911495, 32506927, 61822990, 65013854, 123645980, 130027708, 162534635, 325069270, 650138540, 1007714737, 2015429474, 4030858948, 5038573685, 10077147370, 20154294740]

約数ペア:

[(1, 20154294740), (2, 10077147370), (4, 5038573685), (5, 4030858948), (10, 2015429474), (20, 1007714737), (31, 650138540), (62, 325069270), (124, 162534635), (155, 130027708), (163, 123645980), (310, 65013854), (326, 61822990), (620, 32506927), (652, 30911495), (815, 24729196), (1630, 12364598), (3260, 6182299), (5053, 3988580), (10106, 1994290), (20212, 997145), (25265, 797716), (50530, 398858), (101060, 199429)]