28237990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 59616000

約数和(自身を除く): 31378010

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 59, 95, 110, 118, 190, 209, 229, 295, 418, 458, 590, 649, 1045, 1121, 1145, 1298, 2090, 2242, 2290, 2519, 3245, 4351, 5038, 5605, 6490, 8702, 11210, 12331, 12595, 13511, 21755, 24662, 25190, 27022, 43510, 47861, 61655, 67555, 95722, 123310, 135110, 148621, 239305, 256709, 297242, 478610, 513418, 743105, 1283545, 1486210, 2567090, 2823799, 5647598, 14118995, 28237990]

約数ペア:

[(1, 28237990), (2, 14118995), (5, 5647598), (10, 2823799), (11, 2567090), (19, 1486210), (22, 1283545), (38, 743105), (55, 513418), (59, 478610), (95, 297242), (110, 256709), (118, 239305), (190, 148621), (209, 135110), (229, 123310), (295, 95722), (418, 67555), (458, 61655), (590, 47861), (649, 43510), (1045, 27022), (1121, 25190), (1145, 24662), (1298, 21755), (2090, 13511), (2242, 12595), (2290, 12331), (2519, 11210), (3245, 8702), (4351, 6490), (5038, 5605)]