18275720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 43848000

約数和(自身を除く): 25572280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 139, 152, 173, 190, 278, 346, 380, 556, 692, 695, 760, 865, 1112, 1384, 1390, 1730, 2641, 2780, 3287, 3460, 5282, 5560, 6574, 6920, 10564, 13148, 13205, 16435, 21128, 24047, 26296, 26410, 32870, 48094, 52820, 65740, 96188, 105640, 120235, 131480, 192376, 240470, 456893, 480940, 913786, 961880, 1827572, 2284465, 3655144, 4568930, 9137860, 18275720]

約数ペア:

[(1, 18275720), (2, 9137860), (4, 4568930), (5, 3655144), (8, 2284465), (10, 1827572), (19, 961880), (20, 913786), (38, 480940), (40, 456893), (76, 240470), (95, 192376), (139, 131480), (152, 120235), (173, 105640), (190, 96188), (278, 65740), (346, 52820), (380, 48094), (556, 32870), (692, 26410), (695, 26296), (760, 24047), (865, 21128), (1112, 16435), (1384, 13205), (1390, 13148), (1730, 10564), (2641, 6920), (2780, 6574), (3287, 5560), (3460, 5282)]