180204020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{219761}}^1$

素因数の和:219811

約数の個数: 24

約数和(自身を含む): 387660168

約数和(自身を除く): 207456148

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 219761, 439522, 879044, 1098805, 2197610, 4395220, 9010201, 18020402, 36040804, 45051005, 90102010, 180204020]

約数ペア:

[(1, 180204020), (2, 90102010), (4, 45051005), (5, 36040804), (10, 18020402), (20, 9010201), (41, 4395220), (82, 2197610), (164, 1098805), (205, 879044), (410, 439522), (820, 219761)]