81691660

素因数分解:

$2^2\times 5^1\times {\mathrm{577}}^1\times {\mathrm{7079}}^1$

素因数の和:7665

約数の個数: 24

約数和(自身を含む): 171874080

約数和(自身を除く): 90182420

約数列:

[1, 2, 4, 5, 10, 20, 577, 1154, 2308, 2885, 5770, 7079, 11540, 14158, 28316, 35395, 70790, 141580, 4084583, 8169166, 16338332, 20422915, 40845830, 81691660]

約数ペア:

[(1, 81691660), (2, 40845830), (4, 20422915), (5, 16338332), (10, 8169166), (20, 4084583), (577, 141580), (1154, 70790), (2308, 35395), (2885, 28316), (5770, 14158), (7079, 11540)]