18071980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22039}}^1$

素因数の和:22089

約数の個数: 24

約数和(自身を含む): 38878560

約数和(自身を除く): 20806580

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22039, 44078, 88156, 110195, 220390, 440780, 903599, 1807198, 3614396, 4517995, 9035990, 18071980]

約数ペア:

[(1, 18071980), (2, 9035990), (4, 4517995), (5, 3614396), (10, 1807198), (20, 903599), (41, 440780), (82, 220390), (164, 110195), (205, 88156), (410, 44078), (820, 22039)]