21977110

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1123}}^1$

素因数の和:1252

約数の個数: 32

約数和(自身を含む): 42082560

約数和(自身を除く): 20105450

約数列:

[1, 2, 5, 10, 19, 38, 95, 103, 190, 206, 515, 1030, 1123, 1957, 2246, 3914, 5615, 9785, 11230, 19570, 21337, 42674, 106685, 115669, 213370, 231338, 578345, 1156690, 2197711, 4395422, 10988555, 21977110]

約数ペア:

[(1, 21977110), (2, 10988555), (5, 4395422), (10, 2197711), (19, 1156690), (38, 578345), (95, 231338), (103, 213370), (190, 115669), (206, 106685), (515, 42674), (1030, 21337), (1123, 19570), (1957, 11230), (2246, 9785), (3914, 5615)]