18151420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{409}}^1$

素因数の和:742

約数の個数: 48

約数和(自身を含む): 43807680

約数和(自身を除く): 25656260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 409, 634, 818, 1268, 1585, 1636, 2045, 2219, 2863, 3170, 4090, 4438, 5726, 6340, 8180, 8876, 11095, 11452, 14315, 22190, 28630, 44380, 57260, 129653, 259306, 518612, 648265, 907571, 1296530, 1815142, 2593060, 3630284, 4537855, 9075710, 18151420]

約数ペア:

[(1, 18151420), (2, 9075710), (4, 4537855), (5, 3630284), (7, 2593060), (10, 1815142), (14, 1296530), (20, 907571), (28, 648265), (35, 518612), (70, 259306), (140, 129653), (317, 57260), (409, 44380), (634, 28630), (818, 22190), (1268, 14315), (1585, 11452), (1636, 11095), (2045, 8876), (2219, 8180), (2863, 6340), (3170, 5726), (4090, 4438)]