1257620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{691}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 3255168

約数和(自身を除く): 1997548

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 691, 910, 1382, 1820, 2764, 3455, 4837, 6910, 8983, 9674, 13820, 17966, 19348, 24185, 35932, 44915, 48370, 62881, 89830, 96740, 125762, 179660, 251524, 314405, 628810, 1257620]

約数ペア:

[(1, 1257620), (2, 628810), (4, 314405), (5, 251524), (7, 179660), (10, 125762), (13, 96740), (14, 89830), (20, 62881), (26, 48370), (28, 44915), (35, 35932), (52, 24185), (65, 19348), (70, 17966), (91, 13820), (130, 9674), (140, 8983), (182, 6910), (260, 4837), (364, 3455), (455, 2764), (691, 1820), (910, 1382)]