21185154

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 47608704

約数和(自身を除く): 26423550

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 101, 129, 202, 258, 271, 303, 387, 542, 606, 774, 813, 909, 1626, 1818, 2439, 4343, 4878, 8686, 11653, 13029, 23306, 26058, 27371, 34959, 39087, 54742, 69918, 78174, 82113, 104877, 164226, 209754, 246339, 492678, 1176953, 2353906, 3530859, 7061718, 10592577, 21185154]

約数ペア:

[(1, 21185154), (2, 10592577), (3, 7061718), (6, 3530859), (9, 2353906), (18, 1176953), (43, 492678), (86, 246339), (101, 209754), (129, 164226), (202, 104877), (258, 82113), (271, 78174), (303, 69918), (387, 54742), (542, 39087), (606, 34959), (774, 27371), (813, 26058), (909, 23306), (1626, 13029), (1818, 11653), (2439, 8686), (4343, 4878)]