20688690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:975

約数の個数: 64

約数和(自身を含む): 54991872

約数和(自身を除く): 34303182

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 71, 110, 142, 165, 213, 330, 355, 426, 710, 781, 883, 1065, 1562, 1766, 2130, 2343, 2649, 3905, 4415, 4686, 5298, 7810, 8830, 9713, 11715, 13245, 19426, 23430, 26490, 29139, 48565, 58278, 62693, 97130, 125386, 145695, 188079, 291390, 313465, 376158, 626930, 689623, 940395, 1379246, 1880790, 2068869, 3448115, 4137738, 6896230, 10344345, 20688690]

約数ペア:

[(1, 20688690), (2, 10344345), (3, 6896230), (5, 4137738), (6, 3448115), (10, 2068869), (11, 1880790), (15, 1379246), (22, 940395), (30, 689623), (33, 626930), (55, 376158), (66, 313465), (71, 291390), (110, 188079), (142, 145695), (165, 125386), (213, 97130), (330, 62693), (355, 58278), (426, 48565), (710, 29139), (781, 26490), (883, 23430), (1065, 19426), (1562, 13245), (1766, 11715), (2130, 9713), (2343, 8830), (2649, 7810), (3905, 5298), (4415, 4686)]