21427808

素因数分解:

$2^5\times {\mathrm{337}}^1\times {\mathrm{1987}}^1$

素因数の和:2334

約数の個数: 24

約数和(自身を含む): 42332472

約数和(自身を除く): 20904664

約数列:

[1, 2, 4, 8, 16, 32, 337, 674, 1348, 1987, 2696, 3974, 5392, 7948, 10784, 15896, 31792, 63584, 669619, 1339238, 2678476, 5356952, 10713904, 21427808]

約数ペア:

[(1, 21427808), (2, 10713904), (4, 5356952), (8, 2678476), (16, 1339238), (32, 669619), (337, 63584), (674, 31792), (1348, 15896), (1987, 10784), (2696, 7948), (3974, 5392)]