21822280

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1721}}^1$

素因数の和:2049

約数の個数: 32

約数和(自身を含む): 49283640

約数和(自身を除く): 27461360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 1721, 2536, 3170, 3442, 6340, 6884, 8605, 12680, 13768, 17210, 34420, 68840, 545557, 1091114, 2182228, 2727785, 4364456, 5455570, 10911140, 21822280]

約数ペア:

[(1, 21822280), (2, 10911140), (4, 5455570), (5, 4364456), (8, 2727785), (10, 2182228), (20, 1091114), (40, 545557), (317, 68840), (634, 34420), (1268, 17210), (1585, 13768), (1721, 12680), (2536, 8605), (3170, 6884), (3442, 6340)]