31915220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{38921}}^1$

素因数の和:38971

約数の個数: 24

約数和(自身を含む): 68658408

約数和(自身を除く): 36743188

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 38921, 77842, 155684, 194605, 389210, 778420, 1595761, 3191522, 6383044, 7978805, 15957610, 31915220]

約数ペア:

[(1, 31915220), (2, 15957610), (4, 7978805), (5, 6383044), (10, 3191522), (20, 1595761), (41, 778420), (82, 389210), (164, 194605), (205, 155684), (410, 77842), (820, 38921)]