20499795

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 36

約数和(自身を含む): 36555168

約数和(自身を除く): 16055373

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 271, 369, 615, 813, 1355, 1681, 1845, 2439, 4065, 5043, 8405, 11111, 12195, 15129, 25215, 33333, 55555, 75645, 99999, 166665, 455551, 499995, 1366653, 2277755, 4099959, 6833265, 20499795]

約数ペア:

[(1, 20499795), (3, 6833265), (5, 4099959), (9, 2277755), (15, 1366653), (41, 499995), (45, 455551), (123, 166665), (205, 99999), (271, 75645), (369, 55555), (615, 33333), (813, 25215), (1355, 15129), (1681, 12195), (1845, 11111), (2439, 8405), (4065, 5043)]