81231660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1223}}^1$

素因数の和:1285

約数の個数: 120

約数和(自身を含む): 261255456

約数和(自身を除く): 180023796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 41, 45, 54, 60, 81, 82, 90, 108, 123, 135, 162, 164, 180, 205, 246, 270, 324, 369, 405, 410, 492, 540, 615, 738, 810, 820, 1107, 1223, 1230, 1476, 1620, 1845, 2214, 2446, 2460, 3321, 3669, 3690, 4428, 4892, 5535, 6115, 6642, 7338, 7380, 11007, 11070, 12230, 13284, 14676, 16605, 18345, 22014, 22140, 24460, 33021, 33210, 36690, 44028, 50143, 55035, 66042, 66420, 73380, 99063, 100286, 110070, 132084, 150429, 165105, 198126, 200572, 220140, 250715, 300858, 330210, 396252, 451287, 495315, 501430, 601716, 660420, 752145, 902574, 990630, 1002860, 1353861, 1504290, 1805148, 1981260, 2256435, 2707722, 3008580, 4061583, 4512870, 5415444, 6769305, 8123166, 9025740, 13538610, 16246332, 20307915, 27077220, 40615830, 81231660]

約数ペア:

[(1, 81231660), (2, 40615830), (3, 27077220), (4, 20307915), (5, 16246332), (6, 13538610), (9, 9025740), (10, 8123166), (12, 6769305), (15, 5415444), (18, 4512870), (20, 4061583), (27, 3008580), (30, 2707722), (36, 2256435), (41, 1981260), (45, 1805148), (54, 1504290), (60, 1353861), (81, 1002860), (82, 990630), (90, 902574), (108, 752145), (123, 660420), (135, 601716), (162, 501430), (164, 495315), (180, 451287), (205, 396252), (246, 330210), (270, 300858), (324, 250715), (369, 220140), (405, 200572), (410, 198126), (492, 165105), (540, 150429), (615, 132084), (738, 110070), (810, 100286), (820, 99063), (1107, 73380), (1223, 66420), (1230, 66042), (1476, 55035), (1620, 50143), (1845, 44028), (2214, 36690), (2446, 33210), (2460, 33021), (3321, 24460), (3669, 22140), (3690, 22014), (4428, 18345), (4892, 16605), (5535, 14676), (6115, 13284), (6642, 12230), (7338, 11070), (7380, 11007)]