31438840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9949}}^1$

素因数の和:10039

約数の個数: 32

約数和(自身を含む): 71640000

約数和(自身を除く): 40201160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 9949, 19898, 39796, 49745, 79592, 99490, 198980, 397960, 785971, 1571942, 3143884, 3929855, 6287768, 7859710, 15719420, 31438840]

約数ペア:

[(1, 31438840), (2, 15719420), (4, 7859710), (5, 6287768), (8, 3929855), (10, 3143884), (20, 1571942), (40, 785971), (79, 397960), (158, 198980), (316, 99490), (395, 79592), (632, 49745), (790, 39796), (1580, 19898), (3160, 9949)]