19999870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{1609}}^1$

素因数の和:1740

約数の個数: 32

約数和(自身を含む): 39644640

約数和(自身を除く): 19644770

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 113, 226, 565, 1130, 1243, 1609, 2486, 3218, 6215, 8045, 12430, 16090, 17699, 35398, 88495, 176990, 181817, 363634, 909085, 1818170, 1999987, 3999974, 9999935, 19999870]

約数ペア:

[(1, 19999870), (2, 9999935), (5, 3999974), (10, 1999987), (11, 1818170), (22, 909085), (55, 363634), (110, 181817), (113, 176990), (226, 88495), (565, 35398), (1130, 17699), (1243, 16090), (1609, 12430), (2486, 8045), (3218, 6215)]