81398940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:252

約数の個数: 192

約数和(自身を含む): 277724160

約数和(自身を除く): 196325220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 41, 42, 58, 60, 70, 82, 84, 87, 105, 116, 123, 140, 145, 163, 164, 174, 203, 205, 210, 246, 287, 290, 326, 348, 406, 410, 420, 435, 489, 492, 574, 580, 609, 615, 652, 812, 815, 820, 861, 870, 978, 1015, 1141, 1148, 1189, 1218, 1230, 1435, 1630, 1722, 1740, 1956, 2030, 2282, 2378, 2436, 2445, 2460, 2870, 3045, 3260, 3423, 3444, 3567, 4060, 4305, 4564, 4727, 4756, 4890, 5705, 5740, 5945, 6090, 6683, 6846, 7134, 8323, 8610, 9454, 9780, 11410, 11890, 12180, 13366, 13692, 14181, 14268, 16646, 17115, 17220, 17835, 18908, 20049, 22820, 23635, 23780, 24969, 26732, 28362, 33089, 33292, 33415, 34230, 35670, 40098, 41615, 46781, 47270, 49938, 56724, 66178, 66830, 68460, 70905, 71340, 80196, 83230, 93562, 94540, 99267, 99876, 100245, 124845, 132356, 133660, 140343, 141810, 165445, 166460, 187124, 193807, 198534, 200490, 233905, 249690, 280686, 283620, 330890, 387614, 397068, 400980, 467810, 496335, 499380, 561372, 581421, 661780, 701715, 775228, 935620, 969035, 992670, 1162842, 1356649, 1403430, 1938070, 1985340, 2325684, 2713298, 2806860, 2907105, 3876140, 4069947, 5426596, 5814210, 6783245, 8139894, 11628420, 13566490, 16279788, 20349735, 27132980, 40699470, 81398940]

約数ペア:

[(1, 81398940), (2, 40699470), (3, 27132980), (4, 20349735), (5, 16279788), (6, 13566490), (7, 11628420), (10, 8139894), (12, 6783245), (14, 5814210), (15, 5426596), (20, 4069947), (21, 3876140), (28, 2907105), (29, 2806860), (30, 2713298), (35, 2325684), (41, 1985340), (42, 1938070), (58, 1403430), (60, 1356649), (70, 1162842), (82, 992670), (84, 969035), (87, 935620), (105, 775228), (116, 701715), (123, 661780), (140, 581421), (145, 561372), (163, 499380), (164, 496335), (174, 467810), (203, 400980), (205, 397068), (210, 387614), (246, 330890), (287, 283620), (290, 280686), (326, 249690), (348, 233905), (406, 200490), (410, 198534), (420, 193807), (435, 187124), (489, 166460), (492, 165445), (574, 141810), (580, 140343), (609, 133660), (615, 132356), (652, 124845), (812, 100245), (815, 99876), (820, 99267), (861, 94540), (870, 93562), (978, 83230), (1015, 80196), (1141, 71340), (1148, 70905), (1189, 68460), (1218, 66830), (1230, 66178), (1435, 56724), (1630, 49938), (1722, 47270), (1740, 46781), (1956, 41615), (2030, 40098), (2282, 35670), (2378, 34230), (2436, 33415), (2445, 33292), (2460, 33089), (2870, 28362), (3045, 26732), (3260, 24969), (3423, 23780), (3444, 23635), (3567, 22820), (4060, 20049), (4305, 18908), (4564, 17835), (4727, 17220), (4756, 17115), (4890, 16646), (5705, 14268), (5740, 14181), (5945, 13692), (6090, 13366), (6683, 12180), (6846, 11890), (7134, 11410), (8323, 9780), (8610, 9454)]