18640684

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{449}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 33339600

約数和(自身を除く): 14698916

約数列:

[1, 2, 4, 97, 107, 194, 214, 388, 428, 449, 898, 1796, 10379, 20758, 41516, 43553, 48043, 87106, 96086, 174212, 192172, 4660171, 9320342, 18640684]

約数ペア:

[(1, 18640684), (2, 9320342), (4, 4660171), (97, 192172), (107, 174212), (194, 96086), (214, 87106), (388, 48043), (428, 43553), (449, 41516), (898, 20758), (1796, 10379)]