19909131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 30862080

約数和(自身を除く): 10952949

約数列:

[1, 3, 11, 19, 33, 57, 113, 209, 281, 339, 627, 843, 1243, 2147, 3091, 3729, 5339, 6441, 9273, 16017, 23617, 31753, 58729, 70851, 95259, 176187, 349283, 603307, 1047849, 1809921, 6636377, 19909131]

約数ペア:

[(1, 19909131), (3, 6636377), (11, 1809921), (19, 1047849), (33, 603307), (57, 349283), (113, 176187), (209, 95259), (281, 70851), (339, 58729), (627, 31753), (843, 23617), (1243, 16017), (2147, 9273), (3091, 6441), (3729, 5339)]