21000366280

素因数分解:

$2^3\times 5^1\times {\mathrm{16111}}^1\times {\mathrm{32587}}^1$

素因数の和:48709

約数の個数: 32

約数和(自身を含む): 47255207040

約数和(自身を除く): 26254840760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16111, 32222, 32587, 64444, 65174, 80555, 128888, 130348, 161110, 162935, 260696, 322220, 325870, 644440, 651740, 1303480, 525009157, 1050018314, 2100036628, 2625045785, 4200073256, 5250091570, 10500183140, 21000366280]

約数ペア:

[(1, 21000366280), (2, 10500183140), (4, 5250091570), (5, 4200073256), (8, 2625045785), (10, 2100036628), (20, 1050018314), (40, 525009157), (16111, 1303480), (32222, 651740), (32587, 644440), (64444, 325870), (65174, 322220), (80555, 260696), (128888, 162935), (130348, 161110)]