21902240

素因数分解:

$2^5\times 5^1\times {\mathrm{136889}}^1$

素因数の和:136904

約数の個数: 24

約数和(自身を含む): 51744420

約数和(自身を除く): 29842180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136889, 273778, 547556, 684445, 1095112, 1368890, 2190224, 2737780, 4380448, 5475560, 10951120, 21902240]

約数ペア:

[(1, 21902240), (2, 10951120), (4, 5475560), (5, 4380448), (8, 2737780), (10, 2190224), (16, 1368890), (20, 1095112), (32, 684445), (40, 547556), (80, 273778), (160, 136889)]