20147940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12437}}^1$

素因数の和:12458

約数の個数: 60

約数和(自身を含む): 63209916

約数和(自身を除く): 43061976

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12437, 24874, 37311, 49748, 62185, 74622, 111933, 124370, 149244, 186555, 223866, 248740, 335799, 373110, 447732, 559665, 671598, 746220, 1007397, 1119330, 1343196, 1678995, 2014794, 2238660, 3357990, 4029588, 5036985, 6715980, 10073970, 20147940]

約数ペア:

[(1, 20147940), (2, 10073970), (3, 6715980), (4, 5036985), (5, 4029588), (6, 3357990), (9, 2238660), (10, 2014794), (12, 1678995), (15, 1343196), (18, 1119330), (20, 1007397), (27, 746220), (30, 671598), (36, 559665), (45, 447732), (54, 373110), (60, 335799), (81, 248740), (90, 223866), (108, 186555), (135, 149244), (162, 124370), (180, 111933), (270, 74622), (324, 62185), (405, 49748), (540, 37311), (810, 24874), (1620, 12437)]