74780020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{773}}^1$

素因数の和:1480

約数の個数: 48

約数和(自身を含む): 179964288

約数和(自身を除く): 105184268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 691, 773, 1382, 1546, 2764, 3092, 3455, 3865, 4837, 5411, 6910, 7730, 9674, 10822, 13820, 15460, 19348, 21644, 24185, 27055, 48370, 54110, 96740, 108220, 534143, 1068286, 2136572, 2670715, 3739001, 5341430, 7478002, 10682860, 14956004, 18695005, 37390010, 74780020]

約数ペア:

[(1, 74780020), (2, 37390010), (4, 18695005), (5, 14956004), (7, 10682860), (10, 7478002), (14, 5341430), (20, 3739001), (28, 2670715), (35, 2136572), (70, 1068286), (140, 534143), (691, 108220), (773, 96740), (1382, 54110), (1546, 48370), (2764, 27055), (3092, 24185), (3455, 21644), (3865, 19348), (4837, 15460), (5411, 13820), (6910, 10822), (7730, 9674)]