20461688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1087}}^1$

素因数の和:1287

約数の個数: 32

約数和(自身を含む): 41583360

約数和(自身を除く): 21121672

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 181, 362, 724, 1087, 1448, 2174, 2353, 4348, 4706, 8696, 9412, 14131, 18824, 28262, 56524, 113048, 196747, 393494, 786988, 1573976, 2557711, 5115422, 10230844, 20461688]

約数ペア:

[(1, 20461688), (2, 10230844), (4, 5115422), (8, 2557711), (13, 1573976), (26, 786988), (52, 393494), (104, 196747), (181, 113048), (362, 56524), (724, 28262), (1087, 18824), (1448, 14131), (2174, 9412), (2353, 8696), (4348, 4706)]