21686476

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12697}}^1$

素因数の和:12769

約数の個数: 24

約数和(自身を含む): 44087456

約数和(自身を除く): 22400980

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12697, 25394, 50788, 88879, 177758, 355516, 774517, 1549034, 3098068, 5421619, 10843238, 21686476]

約数ペア:

[(1, 21686476), (2, 10843238), (4, 5421619), (7, 3098068), (14, 1549034), (28, 774517), (61, 355516), (122, 177758), (244, 88879), (427, 50788), (854, 25394), (1708, 12697)]