19913688

素因数分解:

$2^3\times 3^4\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:486

約数の個数: 80

約数和(自身を含む): 56628000

約数和(自身を除く): 36714312

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 79, 81, 108, 158, 162, 216, 237, 316, 324, 389, 474, 632, 648, 711, 778, 948, 1167, 1422, 1556, 1896, 2133, 2334, 2844, 3112, 3501, 4266, 4668, 5688, 6399, 7002, 8532, 9336, 10503, 12798, 14004, 17064, 21006, 25596, 28008, 30731, 31509, 42012, 51192, 61462, 63018, 84024, 92193, 122924, 126036, 184386, 245848, 252072, 276579, 368772, 553158, 737544, 829737, 1106316, 1659474, 2212632, 2489211, 3318948, 4978422, 6637896, 9956844, 19913688]

約数ペア:

[(1, 19913688), (2, 9956844), (3, 6637896), (4, 4978422), (6, 3318948), (8, 2489211), (9, 2212632), (12, 1659474), (18, 1106316), (24, 829737), (27, 737544), (36, 553158), (54, 368772), (72, 276579), (79, 252072), (81, 245848), (108, 184386), (158, 126036), (162, 122924), (216, 92193), (237, 84024), (316, 63018), (324, 61462), (389, 51192), (474, 42012), (632, 31509), (648, 30731), (711, 28008), (778, 25596), (948, 21006), (1167, 17064), (1422, 14004), (1556, 12798), (1896, 10503), (2133, 9336), (2334, 8532), (2844, 7002), (3112, 6399), (3501, 5688), (4266, 4668)]