21613060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{487}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 52141824

約数和(自身を除く): 30528764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 317, 487, 634, 974, 1268, 1585, 1948, 2219, 2435, 3170, 3409, 4438, 4870, 6340, 6818, 8876, 9740, 11095, 13636, 17045, 22190, 34090, 44380, 68180, 154379, 308758, 617516, 771895, 1080653, 1543790, 2161306, 3087580, 4322612, 5403265, 10806530, 21613060]

約数ペア:

[(1, 21613060), (2, 10806530), (4, 5403265), (5, 4322612), (7, 3087580), (10, 2161306), (14, 1543790), (20, 1080653), (28, 771895), (35, 617516), (70, 308758), (140, 154379), (317, 68180), (487, 44380), (634, 34090), (974, 22190), (1268, 17045), (1585, 13636), (1948, 11095), (2219, 9740), (2435, 8876), (3170, 6818), (3409, 6340), (4438, 4870)]