20961340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61651}}^1$

素因数の和:61677

約数の個数: 24

約数和(自身を含む): 46608912

約数和(自身を除く): 25647572

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61651, 123302, 246604, 308255, 616510, 1048067, 1233020, 2096134, 4192268, 5240335, 10480670, 20961340]

約数ペア:

[(1, 20961340), (2, 10480670), (4, 5240335), (5, 4192268), (10, 2096134), (17, 1233020), (20, 1048067), (34, 616510), (68, 308255), (85, 246604), (170, 123302), (340, 61651)]