81533140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313589}}^1$

素因数の和:313611

約数の個数: 24

約数和(自身を含む): 184390920

約数和(自身を除く): 102857780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 313589, 627178, 1254356, 1567945, 3135890, 4076657, 6271780, 8153314, 16306628, 20383285, 40766570, 81533140]

約数ペア:

[(1, 81533140), (2, 40766570), (4, 20383285), (5, 16306628), (10, 8153314), (13, 6271780), (20, 4076657), (26, 3135890), (52, 1567945), (65, 1254356), (130, 627178), (260, 313589)]