21979147

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{421}}^1$

素因数の和:558

約数の個数: 16

約数和(自身を含む): 24246432

約数和(自身を除く): 2267285

約数列:

[1, 17, 37, 83, 421, 629, 1411, 3071, 7157, 15577, 34943, 52207, 264809, 594031, 1292891, 21979147]

約数ペア:

[(1, 21979147), (17, 1292891), (37, 594031), (83, 264809), (421, 52207), (629, 34943), (1411, 15577), (3071, 7157)]