81642840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1353

約数の個数: 128

約数和(自身を含む): 267909120

約数和(自身を除く): 186266280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 31, 34, 40, 51, 60, 62, 68, 85, 93, 102, 120, 124, 136, 155, 170, 186, 204, 248, 255, 310, 340, 372, 408, 465, 510, 527, 620, 680, 744, 930, 1020, 1054, 1240, 1291, 1581, 1860, 2040, 2108, 2582, 2635, 3162, 3720, 3873, 4216, 5164, 5270, 6324, 6455, 7746, 7905, 10328, 10540, 12648, 12910, 15492, 15810, 19365, 21080, 21947, 25820, 30984, 31620, 38730, 40021, 43894, 51640, 63240, 65841, 77460, 80042, 87788, 109735, 120063, 131682, 154920, 160084, 175576, 200105, 219470, 240126, 263364, 320168, 329205, 400210, 438940, 480252, 526728, 600315, 658410, 680357, 800420, 877880, 960504, 1200630, 1316820, 1360714, 1600840, 2041071, 2401260, 2633640, 2721428, 3401785, 4082142, 4802520, 5442856, 6803570, 8164284, 10205355, 13607140, 16328568, 20410710, 27214280, 40821420, 81642840]

約数ペア:

[(1, 81642840), (2, 40821420), (3, 27214280), (4, 20410710), (5, 16328568), (6, 13607140), (8, 10205355), (10, 8164284), (12, 6803570), (15, 5442856), (17, 4802520), (20, 4082142), (24, 3401785), (30, 2721428), (31, 2633640), (34, 2401260), (40, 2041071), (51, 1600840), (60, 1360714), (62, 1316820), (68, 1200630), (85, 960504), (93, 877880), (102, 800420), (120, 680357), (124, 658410), (136, 600315), (155, 526728), (170, 480252), (186, 438940), (204, 400210), (248, 329205), (255, 320168), (310, 263364), (340, 240126), (372, 219470), (408, 200105), (465, 175576), (510, 160084), (527, 154920), (620, 131682), (680, 120063), (744, 109735), (930, 87788), (1020, 80042), (1054, 77460), (1240, 65841), (1291, 63240), (1581, 51640), (1860, 43894), (2040, 40021), (2108, 38730), (2582, 31620), (2635, 30984), (3162, 25820), (3720, 21947), (3873, 21080), (4216, 19365), (5164, 15810), (5270, 15492), (6324, 12910), (6455, 12648), (7746, 10540), (7905, 10328)]