18811740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1997}}^1$

素因数の和:2166

約数の個数: 48

約数和(自身を含む): 53034912

約数和(自身を除く): 34223172

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 1997, 2355, 3140, 3994, 4710, 5991, 7988, 9420, 9985, 11982, 19970, 23964, 29955, 39940, 59910, 119820, 313529, 627058, 940587, 1254116, 1567645, 1881174, 3135290, 3762348, 4702935, 6270580, 9405870, 18811740]

約数ペア:

[(1, 18811740), (2, 9405870), (3, 6270580), (4, 4702935), (5, 3762348), (6, 3135290), (10, 1881174), (12, 1567645), (15, 1254116), (20, 940587), (30, 627058), (60, 313529), (157, 119820), (314, 59910), (471, 39940), (628, 29955), (785, 23964), (942, 19970), (1570, 11982), (1884, 9985), (1997, 9420), (2355, 7988), (3140, 5991), (3994, 4710)]