21508970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2819}}^1$

素因数の和:2942

約数の個数: 32

約数和(自身を含む): 44668800

約数和(自身を除く): 23159830

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 109, 218, 545, 763, 1090, 1526, 2819, 3815, 5638, 7630, 14095, 19733, 28190, 39466, 98665, 197330, 307271, 614542, 1536355, 2150897, 3072710, 4301794, 10754485, 21508970]

約数ペア:

[(1, 21508970), (2, 10754485), (5, 4301794), (7, 3072710), (10, 2150897), (14, 1536355), (35, 614542), (70, 307271), (109, 197330), (218, 98665), (545, 39466), (763, 28190), (1090, 19733), (1526, 14095), (2819, 7630), (3815, 5638)]