21177640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48131}}^1$

素因数の和:48153

約数の個数: 32

約数和(自身を含む): 51982560

約数和(自身を除く): 30804920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48131, 96262, 192524, 240655, 385048, 481310, 529441, 962620, 1058882, 1925240, 2117764, 2647205, 4235528, 5294410, 10588820, 21177640]

約数ペア:

[(1, 21177640), (2, 10588820), (4, 5294410), (5, 4235528), (8, 2647205), (10, 2117764), (11, 1925240), (20, 1058882), (22, 962620), (40, 529441), (44, 481310), (55, 385048), (88, 240655), (110, 192524), (220, 96262), (440, 48131)]