31541540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{19963}}^1$

素因数の和:20051

約数の個数: 24

約数和(自身を含む): 67079040

約数和(自身を除く): 35537500

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 19963, 39926, 79852, 99815, 199630, 399260, 1577077, 3154154, 6308308, 7885385, 15770770, 31541540]

約数ペア:

[(1, 31541540), (2, 15770770), (4, 7885385), (5, 6308308), (10, 3154154), (20, 1577077), (79, 399260), (158, 199630), (316, 99815), (395, 79852), (790, 39926), (1580, 19963)]