21780522

素因数分解:

$2^1\times 3^3\times {\mathrm{149}}^1\times {\mathrm{2707}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 48744000

約数和(自身を除く): 26963478

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 149, 298, 447, 894, 1341, 2682, 2707, 4023, 5414, 8046, 8121, 16242, 24363, 48726, 73089, 146178, 403343, 806686, 1210029, 2420058, 3630087, 7260174, 10890261, 21780522]

約数ペア:

[(1, 21780522), (2, 10890261), (3, 7260174), (6, 3630087), (9, 2420058), (18, 1210029), (27, 806686), (54, 403343), (149, 146178), (298, 73089), (447, 48726), (894, 24363), (1341, 16242), (2682, 8121), (2707, 8046), (4023, 5414)]