21733840

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2539}}^1$

素因数の和:2659

約数の個数: 40

約数和(自身を含む): 51023520

約数和(自身を除く): 29289680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2539, 4280, 5078, 8560, 10156, 12695, 20312, 25390, 40624, 50780, 101560, 203120, 271673, 543346, 1086692, 1358365, 2173384, 2716730, 4346768, 5433460, 10866920, 21733840]

約数ペア:

[(1, 21733840), (2, 10866920), (4, 5433460), (5, 4346768), (8, 2716730), (10, 2173384), (16, 1358365), (20, 1086692), (40, 543346), (80, 271673), (107, 203120), (214, 101560), (428, 50780), (535, 40624), (856, 25390), (1070, 20312), (1712, 12695), (2140, 10156), (2539, 8560), (4280, 5078)]