81219204

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:985

約数の個数: 72

約数和(自身を含む): 225021888

約数和(自身を除く): 143802684

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 317, 396, 634, 647, 951, 1268, 1294, 1902, 1941, 2588, 2853, 3487, 3804, 3882, 5706, 5823, 6974, 7117, 7764, 10461, 11412, 11646, 13948, 14234, 20922, 21351, 23292, 28468, 31383, 41844, 42702, 62766, 64053, 85404, 125532, 128106, 205099, 256212, 410198, 615297, 820396, 1230594, 1845891, 2256089, 2461188, 3691782, 4512178, 6768267, 7383564, 9024356, 13536534, 20304801, 27073068, 40609602, 81219204]

約数ペア:

[(1, 81219204), (2, 40609602), (3, 27073068), (4, 20304801), (6, 13536534), (9, 9024356), (11, 7383564), (12, 6768267), (18, 4512178), (22, 3691782), (33, 2461188), (36, 2256089), (44, 1845891), (66, 1230594), (99, 820396), (132, 615297), (198, 410198), (317, 256212), (396, 205099), (634, 128106), (647, 125532), (951, 85404), (1268, 64053), (1294, 62766), (1902, 42702), (1941, 41844), (2588, 31383), (2853, 28468), (3487, 23292), (3804, 21351), (3882, 20922), (5706, 14234), (5823, 13948), (6974, 11646), (7117, 11412), (7764, 10461)]