20587317

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 30474240

約数和(自身を除く): 9886923

約数列:

[1, 3, 19, 31, 57, 61, 93, 183, 191, 573, 589, 1159, 1767, 1891, 3477, 3629, 5673, 5921, 10887, 11651, 17763, 34953, 35929, 107787, 112499, 221369, 337497, 361181, 664107, 1083543, 6862439, 20587317]

約数ペア:

[(1, 20587317), (3, 6862439), (19, 1083543), (31, 664107), (57, 361181), (61, 337497), (93, 221369), (183, 112499), (191, 107787), (573, 35929), (589, 34953), (1159, 17763), (1767, 11651), (1891, 10887), (3477, 5921), (3629, 5673)]