20002779

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{443}}^1$

素因数の和:651

約数の個数: 24

約数和(自身を含む): 30129840

約数和(自身を除く): 10127061

約数列:

[1, 3, 9, 29, 87, 173, 261, 443, 519, 1329, 1557, 3987, 5017, 12847, 15051, 38541, 45153, 76639, 115623, 229917, 689751, 2222531, 6667593, 20002779]

約数ペア:

[(1, 20002779), (3, 6667593), (9, 2222531), (29, 689751), (87, 229917), (173, 115623), (261, 76639), (443, 45153), (519, 38541), (1329, 15051), (1557, 12847), (3987, 5017)]