320788280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109859}}^1$

素因数の和:109943

約数の個数: 32

約数和(自身を含む): 731667600

約数和(自身を除く): 410879320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 109859, 219718, 439436, 549295, 878872, 1098590, 2197180, 4394360, 8019707, 16039414, 32078828, 40098535, 64157656, 80197070, 160394140, 320788280]

約数ペア:

[(1, 320788280), (2, 160394140), (4, 80197070), (5, 64157656), (8, 40098535), (10, 32078828), (20, 16039414), (40, 8019707), (73, 4394360), (146, 2197180), (292, 1098590), (365, 878872), (584, 549295), (730, 439436), (1460, 219718), (2920, 109859)]