20168379

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 17847621

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 89, 99, 109, 189, 231, 267, 297, 327, 623, 693, 763, 801, 979, 981, 1199, 1869, 2079, 2289, 2403, 2937, 2943, 3597, 5607, 6853, 6867, 8393, 8811, 9701, 10791, 16821, 20559, 20601, 25179, 26433, 29103, 32373, 61677, 67907, 75537, 87309, 106711, 185031, 203721, 226611, 261927, 320133, 611163, 746977, 960399, 1833489, 2240931, 2881197, 6722793, 20168379]

約数ペア:

[(1, 20168379), (3, 6722793), (7, 2881197), (9, 2240931), (11, 1833489), (21, 960399), (27, 746977), (33, 611163), (63, 320133), (77, 261927), (89, 226611), (99, 203721), (109, 185031), (189, 106711), (231, 87309), (267, 75537), (297, 67907), (327, 61677), (623, 32373), (693, 29103), (763, 26433), (801, 25179), (979, 20601), (981, 20559), (1199, 16821), (1869, 10791), (2079, 9701), (2289, 8811), (2403, 8393), (2937, 6867), (2943, 6853), (3597, 5607)]