81657240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2371}}^1$

素因数の和:2433

約数の個数: 128

約数和(自身を含む): 286917120

約数和(自身を除く): 205259880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 615, 820, 840, 861, 984, 1148, 1230, 1435, 1640, 1722, 2296, 2371, 2460, 2870, 3444, 4305, 4742, 4920, 5740, 6888, 7113, 8610, 9484, 11480, 11855, 14226, 16597, 17220, 18968, 23710, 28452, 33194, 34440, 35565, 47420, 49791, 56904, 66388, 71130, 82985, 94840, 97211, 99582, 132776, 142260, 165970, 194422, 199164, 248955, 284520, 291633, 331940, 388844, 398328, 486055, 497910, 583266, 663880, 680477, 777688, 972110, 995820, 1166532, 1360954, 1458165, 1944220, 1991640, 2041431, 2333064, 2721908, 2916330, 3402385, 3888440, 4082862, 5443816, 5832660, 6804770, 8165724, 10207155, 11665320, 13609540, 16331448, 20414310, 27219080, 40828620, 81657240]

約数ペア:

[(1, 81657240), (2, 40828620), (3, 27219080), (4, 20414310), (5, 16331448), (6, 13609540), (7, 11665320), (8, 10207155), (10, 8165724), (12, 6804770), (14, 5832660), (15, 5443816), (20, 4082862), (21, 3888440), (24, 3402385), (28, 2916330), (30, 2721908), (35, 2333064), (40, 2041431), (41, 1991640), (42, 1944220), (56, 1458165), (60, 1360954), (70, 1166532), (82, 995820), (84, 972110), (105, 777688), (120, 680477), (123, 663880), (140, 583266), (164, 497910), (168, 486055), (205, 398328), (210, 388844), (246, 331940), (280, 291633), (287, 284520), (328, 248955), (410, 199164), (420, 194422), (492, 165970), (574, 142260), (615, 132776), (820, 99582), (840, 97211), (861, 94840), (984, 82985), (1148, 71130), (1230, 66388), (1435, 56904), (1640, 49791), (1722, 47420), (2296, 35565), (2371, 34440), (2460, 33194), (2870, 28452), (3444, 23710), (4305, 18968), (4742, 17220), (4920, 16597), (5740, 14226), (6888, 11855), (7113, 11480), (8610, 9484)]