20948991

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:919

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12919809

約数列:

[1, 3, 7, 21, 29, 41, 87, 123, 203, 287, 609, 839, 861, 1189, 2517, 3567, 5873, 8323, 17619, 24331, 24969, 34399, 72993, 103197, 170317, 240793, 510951, 722379, 997571, 2992713, 6982997, 20948991]

約数ペア:

[(1, 20948991), (3, 6982997), (7, 2992713), (21, 997571), (29, 722379), (41, 510951), (87, 240793), (123, 170317), (203, 103197), (287, 72993), (609, 34399), (839, 24969), (861, 24331), (1189, 17619), (2517, 8323), (3567, 5873)]