65680220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{36899}}^1$

素因数の和:36997

約数の個数: 24

約数和(自身を含む): 139482000

約数和(自身を除く): 73801780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 36899, 73798, 147596, 184495, 368990, 737980, 3284011, 6568022, 13136044, 16420055, 32840110, 65680220]

約数ペア:

[(1, 65680220), (2, 32840110), (4, 16420055), (5, 13136044), (10, 6568022), (20, 3284011), (89, 737980), (178, 368990), (356, 184495), (445, 147596), (890, 73798), (1780, 36899)]