20218557020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{211979}}^1$

素因数の和:212258

約数の個数: 48

約数和(自身を含む): 44871926400

約数和(自身を除く): 24653369380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 251, 380, 502, 1004, 1255, 2510, 4769, 5020, 9538, 19076, 23845, 47690, 95380, 211979, 423958, 847916, 1059895, 2119790, 4027601, 4239580, 8055202, 16110404, 20138005, 40276010, 53206729, 80552020, 106413458, 212826916, 266033645, 532067290, 1010927851, 1064134580, 2021855702, 4043711404, 5054639255, 10109278510, 20218557020]

約数ペア:

[(1, 20218557020), (2, 10109278510), (4, 5054639255), (5, 4043711404), (10, 2021855702), (19, 1064134580), (20, 1010927851), (38, 532067290), (76, 266033645), (95, 212826916), (190, 106413458), (251, 80552020), (380, 53206729), (502, 40276010), (1004, 20138005), (1255, 16110404), (2510, 8055202), (4769, 4239580), (5020, 4027601), (9538, 2119790), (19076, 1059895), (23845, 847916), (47690, 423958), (95380, 211979)]