20256010

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 48

約数和(自身を含む): 39875616

約数和(自身を除く): 19619606

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 163, 170, 215, 289, 326, 430, 578, 731, 815, 1445, 1462, 1630, 2771, 2890, 3655, 5542, 7009, 7310, 12427, 13855, 14018, 24854, 27710, 35045, 47107, 62135, 70090, 94214, 119153, 124270, 235535, 238306, 471070, 595765, 1191530, 2025601, 4051202, 10128005, 20256010]

約数ペア:

[(1, 20256010), (2, 10128005), (5, 4051202), (10, 2025601), (17, 1191530), (34, 595765), (43, 471070), (85, 238306), (86, 235535), (163, 124270), (170, 119153), (215, 94214), (289, 70090), (326, 62135), (430, 47107), (578, 35045), (731, 27710), (815, 24854), (1445, 14018), (1462, 13855), (1630, 12427), (2771, 7310), (2890, 7009), (3655, 5542)]