21565904

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{58603}}^1$

素因数の和:58634

約数の個数: 20

約数和(自身を含む): 43601376

約数和(自身を除く): 22035472

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 58603, 117206, 234412, 468824, 937648, 1347869, 2695738, 5391476, 10782952, 21565904]

約数ペア:

[(1, 21565904), (2, 10782952), (4, 5391476), (8, 2695738), (16, 1347869), (23, 937648), (46, 468824), (92, 234412), (184, 117206), (368, 58603)]