65720540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{80147}}^1$

素因数の和:80197

約数の個数: 24

約数和(自身を含む): 141381072

約数和(自身を除く): 75660532

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 80147, 160294, 320588, 400735, 801470, 1602940, 3286027, 6572054, 13144108, 16430135, 32860270, 65720540]

約数ペア:

[(1, 65720540), (2, 32860270), (4, 16430135), (5, 13144108), (10, 6572054), (20, 3286027), (41, 1602940), (82, 801470), (164, 400735), (205, 320588), (410, 160294), (820, 80147)]