21490936

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{449}}^1$

素因数の和:679

約数の個数: 32

約数和(自身を含む): 41904000

約数和(自身を除く): 20413064

約数列:

[1, 2, 4, 8, 31, 62, 124, 193, 248, 386, 449, 772, 898, 1544, 1796, 3592, 5983, 11966, 13919, 23932, 27838, 47864, 55676, 86657, 111352, 173314, 346628, 693256, 2686367, 5372734, 10745468, 21490936]

約数ペア:

[(1, 21490936), (2, 10745468), (4, 5372734), (8, 2686367), (31, 693256), (62, 346628), (124, 173314), (193, 111352), (248, 86657), (386, 55676), (449, 47864), (772, 27838), (898, 23932), (1544, 13919), (1796, 11966), (3592, 5983)]