20895651

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{269}}^1$

素因数の和:425

約数の個数: 40

約数和(自身を含む): 36067680

約数和(自身を除く): 15172029

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 269, 411, 567, 807, 959, 1233, 1883, 2421, 2877, 3699, 5649, 7263, 8631, 11097, 16947, 21789, 25893, 36853, 50841, 77679, 110559, 152523, 257971, 331677, 773913, 995031, 2321739, 2985093, 6965217, 20895651]

約数ペア:

[(1, 20895651), (3, 6965217), (7, 2985093), (9, 2321739), (21, 995031), (27, 773913), (63, 331677), (81, 257971), (137, 152523), (189, 110559), (269, 77679), (411, 50841), (567, 36853), (807, 25893), (959, 21789), (1233, 16947), (1883, 11097), (2421, 8631), (2877, 7263), (3699, 5649)]