21249837

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3877}}^1$

素因数の和:3922

約数の個数: 32

約数和(自身を含む): 37228800

約数和(自身を除く): 15978963

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3877, 5481, 11631, 27139, 34893, 81417, 104679, 112433, 244251, 337299, 732753, 787031, 1011897, 2361093, 3035691, 7083279, 21249837]

約数ペア:

[(1, 21249837), (3, 7083279), (7, 3035691), (9, 2361093), (21, 1011897), (27, 787031), (29, 732753), (63, 337299), (87, 244251), (189, 112433), (203, 104679), (261, 81417), (609, 34893), (783, 27139), (1827, 11631), (3877, 5481)]