21086485

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 31299840

約数和(自身を除く): 10213355

約数列:

[1, 5, 7, 19, 35, 37, 95, 133, 185, 259, 665, 703, 857, 1295, 3515, 4285, 4921, 5999, 16283, 24605, 29995, 31709, 81415, 113981, 158545, 221963, 569905, 602471, 1109815, 3012355, 4217297, 21086485]

約数ペア:

[(1, 21086485), (5, 4217297), (7, 3012355), (19, 1109815), (35, 602471), (37, 569905), (95, 221963), (133, 158545), (185, 113981), (259, 81415), (665, 31709), (703, 29995), (857, 24605), (1295, 16283), (3515, 5999), (4285, 4921)]