21287460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{354791}}^1$

素因数の和:354803

約数の個数: 24

約数和(自身を含む): 59605056

約数和(自身を除く): 38317596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 354791, 709582, 1064373, 1419164, 1773955, 2128746, 3547910, 4257492, 5321865, 7095820, 10643730, 21287460]

約数ペア:

[(1, 21287460), (2, 10643730), (3, 7095820), (4, 5321865), (5, 4257492), (6, 3547910), (10, 2128746), (12, 1773955), (15, 1419164), (20, 1064373), (30, 709582), (60, 354791)]