21000739186

素因数分解:

$2^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{86027}}^1$

素因数の和:86143

約数の個数: 48

約数和(自身を含む): 38130362496

約数和(自身を除く): 17129623310

約数列:

[1, 2, 7, 14, 47, 49, 53, 94, 98, 106, 329, 371, 658, 742, 2303, 2491, 2597, 4606, 4982, 5194, 17437, 34874, 86027, 122059, 172054, 244118, 602189, 1204378, 4043269, 4215323, 4559431, 8086538, 8430646, 9118862, 28302883, 31916017, 56605766, 63832034, 198120181, 214293257, 223412119, 396240362, 428586514, 446824238, 1500052799, 3000105598, 10500369593, 21000739186]

約数ペア:

[(1, 21000739186), (2, 10500369593), (7, 3000105598), (14, 1500052799), (47, 446824238), (49, 428586514), (53, 396240362), (94, 223412119), (98, 214293257), (106, 198120181), (329, 63832034), (371, 56605766), (658, 31916017), (742, 28302883), (2303, 9118862), (2491, 8430646), (2597, 8086538), (4606, 4559431), (4982, 4215323), (5194, 4043269), (17437, 1204378), (34874, 602189), (86027, 244118), (122059, 172054)]