20386478

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{337}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 36504000

約数和(自身を除く): 16117522

約数列:

[1, 2, 7, 14, 29, 58, 149, 203, 298, 337, 406, 674, 1043, 2086, 2359, 4321, 4718, 8642, 9773, 19546, 30247, 50213, 60494, 68411, 100426, 136822, 351491, 702982, 1456177, 2912354, 10193239, 20386478]

約数ペア:

[(1, 20386478), (2, 10193239), (7, 2912354), (14, 1456177), (29, 702982), (58, 351491), (149, 136822), (203, 100426), (298, 68411), (337, 60494), (406, 50213), (674, 30247), (1043, 19546), (2086, 9773), (2359, 8642), (4321, 4718)]