20792980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79973}}^1$

素因数の和:79995

約数の個数: 24

約数和(自身を含む): 47024712

約数和(自身を除く): 26231732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 79973, 159946, 319892, 399865, 799730, 1039649, 1599460, 2079298, 4158596, 5198245, 10396490, 20792980]

約数ペア:

[(1, 20792980), (2, 10396490), (4, 5198245), (5, 4158596), (10, 2079298), (13, 1599460), (20, 1039649), (26, 799730), (52, 399865), (65, 319892), (130, 159946), (260, 79973)]