21131216

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{12343}}^1$

素因数の和:12458

約数の個数: 20

約数和(自身を含む): 41327712

約数和(自身を除く): 20196496

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1712, 12343, 24686, 49372, 98744, 197488, 1320701, 2641402, 5282804, 10565608, 21131216]

約数ペア:

[(1, 21131216), (2, 10565608), (4, 5282804), (8, 2641402), (16, 1320701), (107, 197488), (214, 98744), (428, 49372), (856, 24686), (1712, 12343)]