20400710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{971}}^1$

素因数の和:1180

約数の個数: 32

約数和(自身を含む): 40310784

約数和(自身を除く): 19910074

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 971, 1910, 1942, 2101, 4202, 4855, 9710, 10505, 10681, 21010, 21362, 53405, 106810, 185461, 370922, 927305, 1854610, 2040071, 4080142, 10200355, 20400710]

約数ペア:

[(1, 20400710), (2, 10200355), (5, 4080142), (10, 2040071), (11, 1854610), (22, 927305), (55, 370922), (110, 185461), (191, 106810), (382, 53405), (955, 21362), (971, 21010), (1910, 10681), (1942, 10505), (2101, 9710), (4202, 4855)]