20009110

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1801}}^1$

素因数の和:1920

約数の個数: 32

約数和(自身を含む): 39701664

約数和(自身を除く): 19692554

約数列:

[1, 2, 5, 10, 11, 22, 55, 101, 110, 202, 505, 1010, 1111, 1801, 2222, 3602, 5555, 9005, 11110, 18010, 19811, 39622, 99055, 181901, 198110, 363802, 909505, 1819010, 2000911, 4001822, 10004555, 20009110]

約数ペア:

[(1, 20009110), (2, 10004555), (5, 4001822), (10, 2000911), (11, 1819010), (22, 909505), (55, 363802), (101, 198110), (110, 181901), (202, 99055), (505, 39622), (1010, 19811), (1111, 18010), (1801, 11110), (2222, 9005), (3602, 5555)]