31489880

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{4079}}^1$

素因数の和:4283

約数の個数: 32

約数和(自身を含む): 71236800

約数和(自身を除く): 39746920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 4079, 7720, 8158, 16316, 20395, 32632, 40790, 81580, 163160, 787247, 1574494, 3148988, 3936235, 6297976, 7872470, 15744940, 31489880]

約数ペア:

[(1, 31489880), (2, 15744940), (4, 7872470), (5, 6297976), (8, 3936235), (10, 3148988), (20, 1574494), (40, 787247), (193, 163160), (386, 81580), (772, 40790), (965, 32632), (1544, 20395), (1930, 16316), (3860, 8158), (4079, 7720)]