21818680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41959}}^1$

素因数の和:41983

約数の個数: 32

約数和(自身を含む): 52869600

約数和(自身を除く): 31050920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41959, 83918, 167836, 209795, 335672, 419590, 545467, 839180, 1090934, 1678360, 2181868, 2727335, 4363736, 5454670, 10909340, 21818680]

約数ペア:

[(1, 21818680), (2, 10909340), (4, 5454670), (5, 4363736), (8, 2727335), (10, 2181868), (13, 1678360), (20, 1090934), (26, 839180), (40, 545467), (52, 419590), (65, 335672), (104, 209795), (130, 167836), (260, 83918), (520, 41959)]