81155210

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{261791}}^1$

素因数の和:261829

約数の個数: 16

約数和(自身を含む): 150792192

約数和(自身を除く): 69636982

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 261791, 523582, 1308955, 2617910, 8115521, 16231042, 40577605, 81155210]

約数ペア:

[(1, 81155210), (2, 40577605), (5, 16231042), (10, 8115521), (31, 2617910), (62, 1308955), (155, 523582), (310, 261791)]