80409275

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 102448800

約数和(自身を除く): 22039525

約数列:

[1, 5, 25, 71, 89, 355, 445, 509, 1775, 2225, 2545, 6319, 12725, 31595, 36139, 45301, 157975, 180695, 226505, 903475, 1132525, 3216371, 16081855, 80409275]

約数ペア:

[(1, 80409275), (5, 16081855), (25, 3216371), (71, 1132525), (89, 903475), (355, 226505), (445, 180695), (509, 157975), (1775, 45301), (2225, 36139), (2545, 31595), (6319, 12725)]