21557270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{547}}^1\times {\mathrm{563}}^1$

素因数の和:1124

約数の個数: 32

約数和(自身を含む): 44506368

約数和(自身を除く): 22949098

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 547, 563, 1094, 1126, 2735, 2815, 3829, 3941, 5470, 5630, 7658, 7882, 19145, 19705, 38290, 39410, 307961, 615922, 1539805, 2155727, 3079610, 4311454, 10778635, 21557270]

約数ペア:

[(1, 21557270), (2, 10778635), (5, 4311454), (7, 3079610), (10, 2155727), (14, 1539805), (35, 615922), (70, 307961), (547, 39410), (563, 38290), (1094, 19705), (1126, 19145), (2735, 7882), (2815, 7658), (3829, 5630), (3941, 5470)]