20751856

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:353

約数の個数: 40

約数和(自身を含む): 41383760

約数和(自身を除く): 20631904

約数列:

[1, 2, 4, 8, 16, 73, 109, 146, 163, 218, 292, 326, 436, 584, 652, 872, 1168, 1304, 1744, 2608, 7957, 11899, 15914, 17767, 23798, 31828, 35534, 47596, 63656, 71068, 95192, 127312, 142136, 190384, 284272, 1296991, 2593982, 5187964, 10375928, 20751856]

約数ペア:

[(1, 20751856), (2, 10375928), (4, 5187964), (8, 2593982), (16, 1296991), (73, 284272), (109, 190384), (146, 142136), (163, 127312), (218, 95192), (292, 71068), (326, 63656), (436, 47596), (584, 35534), (652, 31828), (872, 23798), (1168, 17767), (1304, 15914), (1744, 11899), (2608, 7957)]