81991308

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 241315200

約数和(自身を除く): 159323892

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 41, 42, 49, 57, 76, 82, 84, 98, 114, 123, 133, 147, 164, 179, 196, 228, 246, 266, 287, 294, 358, 399, 492, 532, 537, 574, 588, 716, 779, 798, 861, 931, 1074, 1148, 1253, 1558, 1596, 1722, 1862, 2009, 2148, 2337, 2506, 2793, 3116, 3401, 3444, 3724, 3759, 4018, 4674, 5012, 5453, 5586, 6027, 6802, 7339, 7518, 8036, 8771, 9348, 10203, 10906, 11172, 12054, 13604, 14678, 15036, 16359, 17542, 20406, 21812, 22017, 23807, 24108, 26313, 29356, 32718, 35084, 38171, 40812, 44034, 47614, 51373, 52626, 65436, 71421, 76342, 88068, 95228, 102746, 105252, 114513, 139441, 142842, 152684, 154119, 166649, 205492, 229026, 278882, 285684, 308238, 333298, 359611, 418323, 458052, 499947, 557764, 616476, 666596, 719222, 836646, 976087, 999894, 1078833, 1438444, 1673292, 1952174, 1999788, 2157666, 2928261, 3904348, 4315332, 5856522, 6832609, 11713044, 13665218, 20497827, 27330436, 40995654, 81991308]

約数ペア:

[(1, 81991308), (2, 40995654), (3, 27330436), (4, 20497827), (6, 13665218), (7, 11713044), (12, 6832609), (14, 5856522), (19, 4315332), (21, 3904348), (28, 2928261), (38, 2157666), (41, 1999788), (42, 1952174), (49, 1673292), (57, 1438444), (76, 1078833), (82, 999894), (84, 976087), (98, 836646), (114, 719222), (123, 666596), (133, 616476), (147, 557764), (164, 499947), (179, 458052), (196, 418323), (228, 359611), (246, 333298), (266, 308238), (287, 285684), (294, 278882), (358, 229026), (399, 205492), (492, 166649), (532, 154119), (537, 152684), (574, 142842), (588, 139441), (716, 114513), (779, 105252), (798, 102746), (861, 95228), (931, 88068), (1074, 76342), (1148, 71421), (1253, 65436), (1558, 52626), (1596, 51373), (1722, 47614), (1862, 44034), (2009, 40812), (2148, 38171), (2337, 35084), (2506, 32718), (2793, 29356), (3116, 26313), (3401, 24108), (3444, 23807), (3724, 22017), (3759, 21812), (4018, 20406), (4674, 17542), (5012, 16359), (5453, 15036), (5586, 14678), (6027, 13604), (6802, 12054), (7339, 11172), (7518, 10906), (8036, 10203), (8771, 9348)]