19709613

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 38413440

約数和(自身を除く): 18703827

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 49, 51, 63, 77, 99, 119, 147, 153, 187, 231, 239, 357, 441, 539, 561, 693, 717, 833, 1071, 1309, 1617, 1673, 1683, 2151, 2499, 2629, 3927, 4063, 4851, 5019, 7497, 7887, 9163, 11711, 11781, 12189, 15057, 18403, 23661, 27489, 28441, 35133, 36567, 44693, 55209, 82467, 85323, 105399, 128821, 134079, 165627, 199087, 255969, 312851, 386463, 402237, 597261, 938553, 1159389, 1791783, 2189957, 2815659, 6569871, 19709613]

約数ペア:

[(1, 19709613), (3, 6569871), (7, 2815659), (9, 2189957), (11, 1791783), (17, 1159389), (21, 938553), (33, 597261), (49, 402237), (51, 386463), (63, 312851), (77, 255969), (99, 199087), (119, 165627), (147, 134079), (153, 128821), (187, 105399), (231, 85323), (239, 82467), (357, 55209), (441, 44693), (539, 36567), (561, 35133), (693, 28441), (717, 27489), (833, 23661), (1071, 18403), (1309, 15057), (1617, 12189), (1673, 11781), (1683, 11711), (2151, 9163), (2499, 7887), (2629, 7497), (3927, 5019), (4063, 4851)]