81885700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{62989}}^1$

素因数の和:63016

約数の個数: 36

約数和(自身を含む): 191363620

約数和(自身を除く): 109477920

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 62989, 125978, 251956, 314945, 629890, 818857, 1259780, 1574725, 1637714, 3149450, 3275428, 4094285, 6298900, 8188570, 16377140, 20471425, 40942850, 81885700]

約数ペア:

[(1, 81885700), (2, 40942850), (4, 20471425), (5, 16377140), (10, 8188570), (13, 6298900), (20, 4094285), (25, 3275428), (26, 3149450), (50, 1637714), (52, 1574725), (65, 1259780), (100, 818857), (130, 629890), (260, 314945), (325, 251956), (650, 125978), (1300, 62989)]