20989835854

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{70439}}^1$

素因数の和:70684

約数の個数: 32

約数和(自身を含む): 34590548160

約数和(自身を除く): 13600712306

約数列:

[1, 2, 13, 26, 73, 146, 157, 314, 949, 1898, 2041, 4082, 11461, 22922, 70439, 140878, 148993, 297986, 915707, 1831414, 5142047, 10284094, 11058923, 22117846, 66846611, 133693222, 143765999, 287531998, 807301379, 1614602758, 10494917927, 20989835854]

約数ペア:

[(1, 20989835854), (2, 10494917927), (13, 1614602758), (26, 807301379), (73, 287531998), (146, 143765999), (157, 133693222), (314, 66846611), (949, 22117846), (1898, 11058923), (2041, 10284094), (4082, 5142047), (11461, 1831414), (22922, 915707), (70439, 297986), (140878, 148993)]