21216458

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 13378102

約数列:

[1, 2, 29, 43, 47, 58, 86, 94, 181, 362, 1247, 1363, 2021, 2494, 2726, 4042, 5249, 7783, 8507, 10498, 15566, 17014, 58609, 117218, 225707, 246703, 365801, 451414, 493406, 731602, 10608229, 21216458]

約数ペア:

[(1, 21216458), (2, 10608229), (29, 731602), (43, 493406), (47, 451414), (58, 365801), (86, 246703), (94, 225707), (181, 117218), (362, 58609), (1247, 17014), (1363, 15566), (2021, 10498), (2494, 8507), (2726, 7783), (4042, 5249)]