21417410

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 45369720

約数和(自身を除く): 23952310

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 109, 218, 245, 401, 490, 545, 763, 802, 1090, 1526, 2005, 2807, 3815, 4010, 5341, 5614, 7630, 10682, 14035, 19649, 26705, 28070, 39298, 43709, 53410, 87418, 98245, 196490, 218545, 305963, 437090, 611926, 1529815, 2141741, 3059630, 4283482, 10708705, 21417410]

約数ペア:

[(1, 21417410), (2, 10708705), (5, 4283482), (7, 3059630), (10, 2141741), (14, 1529815), (35, 611926), (49, 437090), (70, 305963), (98, 218545), (109, 196490), (218, 98245), (245, 87418), (401, 53410), (490, 43709), (545, 39298), (763, 28070), (802, 26705), (1090, 19649), (1526, 14035), (2005, 10682), (2807, 7630), (3815, 5614), (4010, 5341)]