21630357

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{659}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 35830080

約数和(自身を除く): 14199723

約数列:

[1, 3, 7, 9, 21, 63, 521, 659, 1563, 1977, 3647, 4613, 4689, 5931, 10941, 13839, 32823, 41517, 343339, 1030017, 2403373, 3090051, 7210119, 21630357]

約数ペア:

[(1, 21630357), (3, 7210119), (7, 3090051), (9, 2403373), (21, 1030017), (63, 343339), (521, 41517), (659, 32823), (1563, 13839), (1977, 10941), (3647, 5931), (4613, 4689)]