21543885

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{613}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 41378688

約数和(自身を除く): 19834803

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 71, 99, 165, 213, 355, 495, 613, 639, 781, 1065, 1839, 2343, 3065, 3195, 3905, 5517, 6743, 7029, 9195, 11715, 20229, 27585, 33715, 35145, 43523, 60687, 101145, 130569, 217615, 303435, 391707, 478753, 652845, 1436259, 1958535, 2393765, 4308777, 7181295, 21543885]

約数ペア:

[(1, 21543885), (3, 7181295), (5, 4308777), (9, 2393765), (11, 1958535), (15, 1436259), (33, 652845), (45, 478753), (55, 391707), (71, 303435), (99, 217615), (165, 130569), (213, 101145), (355, 60687), (495, 43523), (613, 35145), (639, 33715), (781, 27585), (1065, 20229), (1839, 11715), (2343, 9195), (3065, 7029), (3195, 6743), (3905, 5517)]