21221790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16451}}^1$

素因数の和:16504

約数の個数: 32

約数和(自身を含む): 52119936

約数和(自身を除く): 30898146

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16451, 32902, 49353, 82255, 98706, 164510, 246765, 493530, 707393, 1414786, 2122179, 3536965, 4244358, 7073930, 10610895, 21221790]

約数ペア:

[(1, 21221790), (2, 10610895), (3, 7073930), (5, 4244358), (6, 3536965), (10, 2122179), (15, 1414786), (30, 707393), (43, 493530), (86, 246765), (129, 164510), (215, 98706), (258, 82255), (430, 49353), (645, 32902), (1290, 16451)]