21618280

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5051}}^1$

素因数の和:5169

約数の個数: 32

約数和(自身を含む): 49105440

約数和(自身を除く): 27487160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5051, 10102, 20204, 25255, 40408, 50510, 101020, 202040, 540457, 1080914, 2161828, 2702285, 4323656, 5404570, 10809140, 21618280]

約数ペア:

[(1, 21618280), (2, 10809140), (4, 5404570), (5, 4323656), (8, 2702285), (10, 2161828), (20, 1080914), (40, 540457), (107, 202040), (214, 101020), (428, 50510), (535, 40408), (856, 25255), (1070, 20204), (2140, 10102), (4280, 5051)]