197249997

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 332259840

約数和(自身を除く): 135009843

約数列:

[1, 3, 7, 17, 21, 37, 51, 109, 111, 119, 137, 259, 327, 357, 411, 629, 763, 777, 959, 1853, 1887, 2289, 2329, 2877, 4033, 4403, 5069, 5559, 6987, 12099, 12971, 13209, 14933, 15207, 16303, 28231, 35483, 38913, 44799, 48909, 68561, 84693, 86173, 104531, 106449, 205683, 253861, 258519, 313593, 479927, 552521, 603211, 761583, 1439781, 1657563, 1777027, 1809633, 3867647, 5331081, 9392857, 11602941, 28178571, 65749999, 197249997]

約数ペア:

[(1, 197249997), (3, 65749999), (7, 28178571), (17, 11602941), (21, 9392857), (37, 5331081), (51, 3867647), (109, 1809633), (111, 1777027), (119, 1657563), (137, 1439781), (259, 761583), (327, 603211), (357, 552521), (411, 479927), (629, 313593), (763, 258519), (777, 253861), (959, 205683), (1853, 106449), (1887, 104531), (2289, 86173), (2329, 84693), (2877, 68561), (4033, 48909), (4403, 44799), (5069, 38913), (5559, 35483), (6987, 28231), (12099, 16303), (12971, 15207), (13209, 14933)]