21904660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26713}}^1$

素因数の和:26763

約数の個数: 24

約数和(自身を含む): 47123496

約数和(自身を除く): 25218836

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26713, 53426, 106852, 133565, 267130, 534260, 1095233, 2190466, 4380932, 5476165, 10952330, 21904660]

約数ペア:

[(1, 21904660), (2, 10952330), (4, 5476165), (5, 4380932), (10, 2190466), (20, 1095233), (41, 534260), (82, 267130), (164, 133565), (205, 106852), (410, 53426), (820, 26713)]