81800800

素因数分解:

$2^5\times 5^2\times {\mathrm{102251}}^1$

素因数の和:102271

約数の個数: 36

約数和(自身を含む): 199698156

約数和(自身を除く): 117897356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 102251, 204502, 409004, 511255, 818008, 1022510, 1636016, 2045020, 2556275, 3272032, 4090040, 5112550, 8180080, 10225100, 16360160, 20450200, 40900400, 81800800]

約数ペア:

[(1, 81800800), (2, 40900400), (4, 20450200), (5, 16360160), (8, 10225100), (10, 8180080), (16, 5112550), (20, 4090040), (25, 3272032), (32, 2556275), (40, 2045020), (50, 1636016), (80, 1022510), (100, 818008), (160, 511255), (200, 409004), (400, 204502), (800, 102251)]