21847640

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1723}}^1$

素因数の和:2051

約数の個数: 32

約数和(自身を含む): 49340880

約数和(自身を除く): 27493240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 1723, 2536, 3170, 3446, 6340, 6892, 8615, 12680, 13784, 17230, 34460, 68920, 546191, 1092382, 2184764, 2730955, 4369528, 5461910, 10923820, 21847640]

約数ペア:

[(1, 21847640), (2, 10923820), (4, 5461910), (5, 4369528), (8, 2730955), (10, 2184764), (20, 1092382), (40, 546191), (317, 68920), (634, 34460), (1268, 17230), (1585, 13784), (1723, 12680), (2536, 8615), (3170, 6892), (3446, 6340)]