40458280

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2473}}^1$

素因数の和:2893

約数の個数: 32

約数和(自身を含む): 91290600

約数和(自身を除く): 50832320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 2473, 3272, 4090, 4946, 8180, 9892, 12365, 16360, 19784, 24730, 49460, 98920, 1011457, 2022914, 4045828, 5057285, 8091656, 10114570, 20229140, 40458280]

約数ペア:

[(1, 40458280), (2, 20229140), (4, 10114570), (5, 8091656), (8, 5057285), (10, 4045828), (20, 2022914), (40, 1011457), (409, 98920), (818, 49460), (1636, 24730), (2045, 19784), (2473, 16360), (3272, 12365), (4090, 9892), (4946, 8180)]