21525220

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12967}}^1$

素因数の和:13059

約数の個数: 24

約数和(自身を含む): 45751104

約数和(自身を除く): 24225884

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12967, 25934, 51868, 64835, 129670, 259340, 1076261, 2152522, 4305044, 5381305, 10762610, 21525220]

約数ペア:

[(1, 21525220), (2, 10762610), (4, 5381305), (5, 4305044), (10, 2152522), (20, 1076261), (83, 259340), (166, 129670), (332, 64835), (415, 51868), (830, 25934), (1660, 12967)]