21919840

素因数分解:

$2^5\times 5^1\times {\mathrm{136999}}^1$

素因数の和:137014

約数の個数: 24

約数和(自身を含む): 51786000

約数和(自身を除く): 29866160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136999, 273998, 547996, 684995, 1095992, 1369990, 2191984, 2739980, 4383968, 5479960, 10959920, 21919840]

約数ペア:

[(1, 21919840), (2, 10959920), (4, 5479960), (5, 4383968), (8, 2739980), (10, 2191984), (16, 1369990), (20, 1095992), (32, 684995), (40, 547996), (80, 273998), (160, 136999)]