25282020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1997}}^1$

素因数の和:2220

約数の個数: 48

約数和(自身を含む): 71160768

約数和(自身を除く): 45878748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 211, 422, 633, 844, 1055, 1266, 1997, 2110, 2532, 3165, 3994, 4220, 5991, 6330, 7988, 9985, 11982, 12660, 19970, 23964, 29955, 39940, 59910, 119820, 421367, 842734, 1264101, 1685468, 2106835, 2528202, 4213670, 5056404, 6320505, 8427340, 12641010, 25282020]

約数ペア:

[(1, 25282020), (2, 12641010), (3, 8427340), (4, 6320505), (5, 5056404), (6, 4213670), (10, 2528202), (12, 2106835), (15, 1685468), (20, 1264101), (30, 842734), (60, 421367), (211, 119820), (422, 59910), (633, 39940), (844, 29955), (1055, 23964), (1266, 19970), (1997, 12660), (2110, 11982), (2532, 9985), (3165, 7988), (3994, 6330), (4220, 5991)]