81026990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1801}}^1$

素因数の和:2228

約数の個数: 32

約数和(自身を含む): 159585120

約数和(自身を除く): 78558130

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 409, 818, 1801, 2045, 3602, 4090, 4499, 8998, 9005, 18010, 19811, 22495, 39622, 44990, 99055, 198110, 736609, 1473218, 3683045, 7366090, 8102699, 16205398, 40513495, 81026990]

約数ペア:

[(1, 81026990), (2, 40513495), (5, 16205398), (10, 8102699), (11, 7366090), (22, 3683045), (55, 1473218), (110, 736609), (409, 198110), (818, 99055), (1801, 44990), (2045, 39622), (3602, 22495), (4090, 19811), (4499, 18010), (8998, 9005)]