21605185

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 31829760

約数和(自身を除く): 10224575

約数列:

[1, 5, 7, 19, 35, 53, 95, 133, 265, 371, 613, 665, 1007, 1855, 3065, 4291, 5035, 7049, 11647, 21455, 32489, 35245, 58235, 81529, 162445, 227423, 407645, 617291, 1137115, 3086455, 4321037, 21605185]

約数ペア:

[(1, 21605185), (5, 4321037), (7, 3086455), (19, 1137115), (35, 617291), (53, 407645), (95, 227423), (133, 162445), (265, 81529), (371, 58235), (613, 35245), (665, 32489), (1007, 21455), (1855, 11647), (3065, 7049), (4291, 5035)]