20816490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 52565760

約数和(自身を除く): 31749270

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 71, 87, 142, 145, 174, 213, 290, 337, 355, 426, 435, 674, 710, 870, 1011, 1065, 1685, 2022, 2059, 2130, 3370, 4118, 5055, 6177, 9773, 10110, 10295, 12354, 19546, 20590, 23927, 29319, 30885, 47854, 48865, 58638, 61770, 71781, 97730, 119635, 143562, 146595, 239270, 293190, 358905, 693883, 717810, 1387766, 2081649, 3469415, 4163298, 6938830, 10408245, 20816490]

約数ペア:

[(1, 20816490), (2, 10408245), (3, 6938830), (5, 4163298), (6, 3469415), (10, 2081649), (15, 1387766), (29, 717810), (30, 693883), (58, 358905), (71, 293190), (87, 239270), (142, 146595), (145, 143562), (174, 119635), (213, 97730), (290, 71781), (337, 61770), (355, 58638), (426, 48865), (435, 47854), (674, 30885), (710, 29319), (870, 23927), (1011, 20590), (1065, 19546), (1685, 12354), (2022, 10295), (2059, 10110), (2130, 9773), (3370, 6177), (4118, 5055)]