72020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 163464

約数和(自身を除く): 91444

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 554, 1108, 1385, 2770, 3601, 5540, 7202, 14404, 18005, 36010, 72020]

約数ペア:

[(1, 72020), (2, 36010), (4, 18005), (5, 14404), (10, 7202), (13, 5540), (20, 3601), (26, 2770), (52, 1385), (65, 1108), (130, 554), (260, 277)]