20011915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{881}}^1$

素因数の和:963

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10470005

約数列:

[1, 5, 7, 11, 35, 55, 59, 77, 295, 385, 413, 649, 881, 2065, 3245, 4405, 4543, 6167, 9691, 22715, 30835, 48455, 51979, 67837, 259895, 339185, 363853, 571769, 1819265, 2858845, 4002383, 20011915]

約数ペア:

[(1, 20011915), (5, 4002383), (7, 2858845), (11, 1819265), (35, 571769), (55, 363853), (59, 339185), (77, 259895), (295, 67837), (385, 51979), (413, 48455), (649, 30835), (881, 22715), (2065, 9691), (3245, 6167), (4405, 4543)]