81357080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{7853}}^1$

素因数の和:7908

約数の個数: 64

約数和(自身を含む): 214885440

約数和(自身を除く): 133528360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 2072, 2590, 5180, 7853, 10360, 15706, 31412, 39265, 54971, 62824, 78530, 109942, 157060, 219884, 274855, 290561, 314120, 439768, 549710, 581122, 1099420, 1162244, 1452805, 2033927, 2198840, 2324488, 2905610, 4067854, 5811220, 8135708, 10169635, 11622440, 16271416, 20339270, 40678540, 81357080]

約数ペア:

[(1, 81357080), (2, 40678540), (4, 20339270), (5, 16271416), (7, 11622440), (8, 10169635), (10, 8135708), (14, 5811220), (20, 4067854), (28, 2905610), (35, 2324488), (37, 2198840), (40, 2033927), (56, 1452805), (70, 1162244), (74, 1099420), (140, 581122), (148, 549710), (185, 439768), (259, 314120), (280, 290561), (296, 274855), (370, 219884), (518, 157060), (740, 109942), (1036, 78530), (1295, 62824), (1480, 54971), (2072, 39265), (2590, 31412), (5180, 15706), (7853, 10360)]