21143840

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1283}}^1$

素因数の和:1401

約数の個数: 48

約数和(自身を含む): 50476608

約数和(自身を除く): 29332768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1283, 1648, 2060, 2566, 3296, 4120, 5132, 6415, 8240, 10264, 12830, 16480, 20528, 25660, 41056, 51320, 102640, 132149, 205280, 264298, 528596, 660745, 1057192, 1321490, 2114384, 2642980, 4228768, 5285960, 10571920, 21143840]

約数ペア:

[(1, 21143840), (2, 10571920), (4, 5285960), (5, 4228768), (8, 2642980), (10, 2114384), (16, 1321490), (20, 1057192), (32, 660745), (40, 528596), (80, 264298), (103, 205280), (160, 132149), (206, 102640), (412, 51320), (515, 41056), (824, 25660), (1030, 20528), (1283, 16480), (1648, 12830), (2060, 10264), (2566, 8240), (3296, 6415), (4120, 5132)]