20698809

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{521}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 10871751

約数列:

[1, 3, 17, 19, 41, 51, 57, 123, 323, 521, 697, 779, 969, 1563, 2091, 2337, 8857, 9899, 13243, 21361, 26571, 29697, 39729, 64083, 168283, 363137, 405859, 504849, 1089411, 1217577, 6899603, 20698809]

約数ペア:

[(1, 20698809), (3, 6899603), (17, 1217577), (19, 1089411), (41, 504849), (51, 405859), (57, 363137), (123, 168283), (323, 64083), (521, 39729), (697, 29697), (779, 26571), (969, 21361), (1563, 13243), (2091, 9899), (2337, 8857)]