21662680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41659}}^1$

素因数の和:41683

約数の個数: 32

約数和(自身を含む): 52491600

約数和(自身を除く): 30828920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41659, 83318, 166636, 208295, 333272, 416590, 541567, 833180, 1083134, 1666360, 2166268, 2707835, 4332536, 5415670, 10831340, 21662680]

約数ペア:

[(1, 21662680), (2, 10831340), (4, 5415670), (5, 4332536), (8, 2707835), (10, 2166268), (13, 1666360), (20, 1083134), (26, 833180), (40, 541567), (52, 416590), (65, 333272), (104, 208295), (130, 166636), (260, 83318), (520, 41659)]