20454920

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1181}}^1$

素因数の和:1625

約数の個数: 32

約数和(自身を含む): 46168920

約数和(自身を除く): 25714000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1181, 1732, 2165, 2362, 3464, 4330, 4724, 5905, 8660, 9448, 11810, 17320, 23620, 47240, 511373, 1022746, 2045492, 2556865, 4090984, 5113730, 10227460, 20454920]

約数ペア:

[(1, 20454920), (2, 10227460), (4, 5113730), (5, 4090984), (8, 2556865), (10, 2045492), (20, 1022746), (40, 511373), (433, 47240), (866, 23620), (1181, 17320), (1732, 11810), (2165, 9448), (2362, 8660), (3464, 5905), (4330, 4724)]