82740640

素因数分解:

$2^5\times 5^1\times {\mathrm{517129}}^1$

素因数の和:517144

約数の個数: 24

約数和(自身を含む): 195475140

約数和(自身を除く): 112734500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 517129, 1034258, 2068516, 2585645, 4137032, 5171290, 8274064, 10342580, 16548128, 20685160, 41370320, 82740640]

約数ペア:

[(1, 82740640), (2, 41370320), (4, 20685160), (5, 16548128), (8, 10342580), (10, 8274064), (16, 5171290), (20, 4137032), (32, 2585645), (40, 2068516), (80, 1034258), (160, 517129)]