408078460

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{39163}}^1$

素因数の和:39693

約数の個数: 24

約数和(自身を含む): 858631536

約数和(自身を除く): 450553076

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 5210, 10420, 39163, 78326, 156652, 195815, 391630, 783260, 20403923, 40807846, 81615692, 102019615, 204039230, 408078460]

約数ペア:

[(1, 408078460), (2, 204039230), (4, 102019615), (5, 81615692), (10, 40807846), (20, 20403923), (521, 783260), (1042, 391630), (2084, 195815), (2605, 156652), (5210, 78326), (10420, 39163)]