208512980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{801973}}^1$

素因数の和:801995

約数の個数: 24

約数和(自身を含む): 471560712

約数和(自身を除く): 263047732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 801973, 1603946, 3207892, 4009865, 8019730, 10425649, 16039460, 20851298, 41702596, 52128245, 104256490, 208512980]

約数ペア:

[(1, 208512980), (2, 104256490), (4, 52128245), (5, 41702596), (10, 20851298), (13, 16039460), (20, 10425649), (26, 8019730), (52, 4009865), (65, 3207892), (130, 1603946), (260, 801973)]