21000228208

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{1009}}^1\times {\mathrm{31727}}^1$

素因数の和:32785

約数の個数: 40

約数和(自身を含む): 41722954560

約数和(自身を除く): 20722726352

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 1009, 2018, 4036, 8072, 16144, 31727, 41369, 63454, 82738, 126908, 165476, 253816, 330952, 507632, 661904, 1300807, 2601614, 5203228, 10406456, 20812912, 32012543, 64025086, 128050172, 256100344, 512200688, 1312514263, 2625028526, 5250057052, 10500114104, 21000228208]

約数ペア:

[(1, 21000228208), (2, 10500114104), (4, 5250057052), (8, 2625028526), (16, 1312514263), (41, 512200688), (82, 256100344), (164, 128050172), (328, 64025086), (656, 32012543), (1009, 20812912), (2018, 10406456), (4036, 5203228), (8072, 2601614), (16144, 1300807), (31727, 661904), (41369, 507632), (63454, 330952), (82738, 253816), (126908, 165476)]