31712360

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1997}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 71568360

約数和(自身を除く): 39856000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1985, 1997, 3176, 3970, 3994, 7940, 7988, 9985, 15880, 15976, 19970, 39940, 79880, 792809, 1585618, 3171236, 3964045, 6342472, 7928090, 15856180, 31712360]

約数ペア:

[(1, 31712360), (2, 15856180), (4, 7928090), (5, 6342472), (8, 3964045), (10, 3171236), (20, 1585618), (40, 792809), (397, 79880), (794, 39940), (1588, 19970), (1985, 15976), (1997, 15880), (3176, 9985), (3970, 7988), (3994, 7940)]