20458100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15737}}^1$

素因数の和:15764

約数の個数: 36

約数和(自身を含む): 47812044

約数和(自身を除く): 27353944

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15737, 31474, 62948, 78685, 157370, 204581, 314740, 393425, 409162, 786850, 818324, 1022905, 1573700, 2045810, 4091620, 5114525, 10229050, 20458100]

約数ペア:

[(1, 20458100), (2, 10229050), (4, 5114525), (5, 4091620), (10, 2045810), (13, 1573700), (20, 1022905), (25, 818324), (26, 786850), (50, 409162), (52, 393425), (65, 314740), (100, 204581), (130, 157370), (260, 78685), (325, 62948), (650, 31474), (1300, 15737)]