20013980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2423}}^1$

素因数の和:2498

約数の個数: 48

約数和(自身を含む): 48867840

約数和(自身を除く): 28853860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2423, 4130, 4846, 8260, 9692, 12115, 16961, 24230, 33922, 48460, 67844, 84805, 142957, 169610, 285914, 339220, 571828, 714785, 1000699, 1429570, 2001398, 2859140, 4002796, 5003495, 10006990, 20013980]

約数ペア:

[(1, 20013980), (2, 10006990), (4, 5003495), (5, 4002796), (7, 2859140), (10, 2001398), (14, 1429570), (20, 1000699), (28, 714785), (35, 571828), (59, 339220), (70, 285914), (118, 169610), (140, 142957), (236, 84805), (295, 67844), (413, 48460), (590, 33922), (826, 24230), (1180, 16961), (1652, 12115), (2065, 9692), (2423, 8260), (4130, 4846)]