20918482

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1\times {\mathrm{311}}^1$

素因数の和:538

約数の個数: 24

約数和(自身を含む): 34257600

約数和(自身を除く): 13339118

約数列:

[1, 2, 13, 26, 169, 199, 311, 338, 398, 622, 2587, 4043, 5174, 8086, 33631, 52559, 61889, 67262, 105118, 123778, 804557, 1609114, 10459241, 20918482]

約数ペア:

[(1, 20918482), (2, 10459241), (13, 1609114), (26, 804557), (169, 123778), (199, 105118), (311, 67262), (338, 61889), (398, 52559), (622, 33631), (2587, 8086), (4043, 5174)]