1247780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{701}}^1$

素因数の和:799

約数の個数: 24

約数和(自身を含む): 2653560

約数和(自身を除く): 1405780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 701, 890, 1402, 1780, 2804, 3505, 7010, 14020, 62389, 124778, 249556, 311945, 623890, 1247780]

約数ペア:

[(1, 1247780), (2, 623890), (4, 311945), (5, 249556), (10, 124778), (20, 62389), (89, 14020), (178, 7010), (356, 3505), (445, 2804), (701, 1780), (890, 1402)]