21378222

素因数分解:

$2^1\times 3^3\times {\mathrm{149}}^1\times {\mathrm{2657}}^1$

素因数の和:2817

約数の個数: 32

約数和(自身を含む): 47844000

約数和(自身を除く): 26465778

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 149, 298, 447, 894, 1341, 2657, 2682, 4023, 5314, 7971, 8046, 15942, 23913, 47826, 71739, 143478, 395893, 791786, 1187679, 2375358, 3563037, 7126074, 10689111, 21378222]

約数ペア:

[(1, 21378222), (2, 10689111), (3, 7126074), (6, 3563037), (9, 2375358), (18, 1187679), (27, 791786), (54, 395893), (149, 143478), (298, 71739), (447, 47826), (894, 23913), (1341, 15942), (2657, 8046), (2682, 7971), (4023, 5314)]