278997686

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{31159}}^1$

素因数の和:31220

約数の個数: 24

約数和(自身を含む): 472447920

約数和(自身を除く): 193450234

約数列:

[1, 2, 11, 22, 37, 74, 121, 242, 407, 814, 4477, 8954, 31159, 62318, 342749, 685498, 1152883, 2305766, 3770239, 7540478, 12681713, 25363426, 139498843, 278997686]

約数ペア:

[(1, 278997686), (2, 139498843), (11, 25363426), (22, 12681713), (37, 7540478), (74, 3770239), (121, 2305766), (242, 1152883), (407, 685498), (814, 342749), (4477, 62318), (8954, 31159)]