15221720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4817}}^1$

素因数の和:4907

約数の個数: 32

約数和(自身を含む): 34689600

約数和(自身を除く): 19467880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 4817, 9634, 19268, 24085, 38536, 48170, 96340, 192680, 380543, 761086, 1522172, 1902715, 3044344, 3805430, 7610860, 15221720]

約数ペア:

[(1, 15221720), (2, 7610860), (4, 3805430), (5, 3044344), (8, 1902715), (10, 1522172), (20, 761086), (40, 380543), (79, 192680), (158, 96340), (316, 48170), (395, 38536), (632, 24085), (790, 19268), (1580, 9634), (3160, 4817)]