21742064

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:357

約数の個数: 40

約数和(自身を含む): 43330560

約数和(自身を除く): 21588496

約数列:

[1, 2, 4, 8, 16, 79, 103, 158, 167, 206, 316, 334, 412, 632, 668, 824, 1264, 1336, 1648, 2672, 8137, 13193, 16274, 17201, 26386, 32548, 34402, 52772, 65096, 68804, 105544, 130192, 137608, 211088, 275216, 1358879, 2717758, 5435516, 10871032, 21742064]

約数ペア:

[(1, 21742064), (2, 10871032), (4, 5435516), (8, 2717758), (16, 1358879), (79, 275216), (103, 211088), (158, 137608), (167, 130192), (206, 105544), (316, 68804), (334, 65096), (412, 52772), (632, 34402), (668, 32548), (824, 26386), (1264, 17201), (1336, 16274), (1648, 13193), (2672, 8137)]