31071640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7691}}^1$

素因数の和:7803

約数の個数: 32

約数和(自身を含む): 70612560

約数和(自身を除く): 39540920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7691, 15382, 30764, 38455, 61528, 76910, 153820, 307640, 776791, 1553582, 3107164, 3883955, 6214328, 7767910, 15535820, 31071640]

約数ペア:

[(1, 31071640), (2, 15535820), (4, 7767910), (5, 6214328), (8, 3883955), (10, 3107164), (20, 1553582), (40, 776791), (101, 307640), (202, 153820), (404, 76910), (505, 61528), (808, 38455), (1010, 30764), (2020, 15382), (4040, 7691)]