38490440

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{991}}^1$

素因数の和:1973

約数の個数: 32

約数和(自身を含む): 86780160

約数和(自身を除く): 48289720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 991, 1942, 1982, 3884, 3964, 4855, 4955, 7768, 7928, 9710, 9910, 19420, 19820, 38840, 39640, 962261, 1924522, 3849044, 4811305, 7698088, 9622610, 19245220, 38490440]

約数ペア:

[(1, 38490440), (2, 19245220), (4, 9622610), (5, 7698088), (8, 4811305), (10, 3849044), (20, 1924522), (40, 962261), (971, 39640), (991, 38840), (1942, 19820), (1982, 19420), (3884, 9910), (3964, 9710), (4855, 7928), (4955, 7768)]