18268840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15749}}^1$

素因数の和:15789

約数の個数: 32

約数和(自身を含む): 42525000

約数和(自身を除く): 24256160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 15749, 31498, 62996, 78745, 125992, 157490, 314980, 456721, 629960, 913442, 1826884, 2283605, 3653768, 4567210, 9134420, 18268840]

約数ペア:

[(1, 18268840), (2, 9134420), (4, 4567210), (5, 3653768), (8, 2283605), (10, 1826884), (20, 913442), (29, 629960), (40, 456721), (58, 314980), (116, 157490), (145, 125992), (232, 78745), (290, 62996), (580, 31498), (1160, 15749)]