20403930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15817}}^1$

素因数の和:15870

約数の個数: 32

約数和(自身を含む): 50111424

約数和(自身を除く): 29707494

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 15817, 31634, 47451, 79085, 94902, 158170, 237255, 474510, 680131, 1360262, 2040393, 3400655, 4080786, 6801310, 10201965, 20403930]

約数ペア:

[(1, 20403930), (2, 10201965), (3, 6801310), (5, 4080786), (6, 3400655), (10, 2040393), (15, 1360262), (30, 680131), (43, 474510), (86, 237255), (129, 158170), (215, 94902), (258, 79085), (430, 47451), (645, 31634), (1290, 15817)]