20869640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47431}}^1$

素因数の和:47453

約数の個数: 32

約数和(自身を含む): 51226560

約数和(自身を除く): 30356920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47431, 94862, 189724, 237155, 379448, 474310, 521741, 948620, 1043482, 1897240, 2086964, 2608705, 4173928, 5217410, 10434820, 20869640]

約数ペア:

[(1, 20869640), (2, 10434820), (4, 5217410), (5, 4173928), (8, 2608705), (10, 2086964), (11, 1897240), (20, 1043482), (22, 948620), (40, 521741), (44, 474310), (55, 379448), (88, 237155), (110, 189724), (220, 94862), (440, 47431)]