81239220

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:283

約数の個数: 192

約数和(自身を含む): 273530880

約数和(自身を除く): 192291660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 31, 36, 45, 46, 54, 60, 62, 69, 90, 92, 93, 108, 115, 124, 135, 138, 155, 180, 186, 207, 211, 230, 270, 276, 279, 310, 345, 372, 414, 422, 460, 465, 540, 558, 620, 621, 633, 690, 713, 828, 837, 844, 930, 1035, 1055, 1116, 1242, 1266, 1380, 1395, 1426, 1674, 1860, 1899, 2070, 2110, 2139, 2484, 2532, 2790, 2852, 3105, 3165, 3348, 3565, 3798, 4140, 4185, 4220, 4278, 4853, 5580, 5697, 6210, 6330, 6417, 6541, 7130, 7596, 8370, 8556, 9495, 9706, 10695, 11394, 12420, 12660, 12834, 13082, 14260, 14559, 16740, 18990, 19251, 19412, 19623, 21390, 22788, 24265, 25668, 26164, 28485, 29118, 32085, 32705, 37980, 38502, 39246, 42780, 43677, 48530, 56970, 58236, 58869, 64170, 65410, 72795, 77004, 78492, 87354, 96255, 97060, 98115, 113940, 117738, 128340, 130820, 131031, 145590, 150443, 174708, 176607, 192510, 196230, 218385, 235476, 262062, 291180, 294345, 300886, 353214, 385020, 392460, 436770, 451329, 524124, 588690, 601772, 655155, 706428, 752215, 873540, 883035, 902658, 1177380, 1310310, 1353987, 1504430, 1766070, 1805316, 2256645, 2620620, 2707974, 3008860, 3532140, 4061961, 4513290, 5415948, 6769935, 8123922, 9026580, 13539870, 16247844, 20309805, 27079740, 40619610, 81239220]

約数ペア:

[(1, 81239220), (2, 40619610), (3, 27079740), (4, 20309805), (5, 16247844), (6, 13539870), (9, 9026580), (10, 8123922), (12, 6769935), (15, 5415948), (18, 4513290), (20, 4061961), (23, 3532140), (27, 3008860), (30, 2707974), (31, 2620620), (36, 2256645), (45, 1805316), (46, 1766070), (54, 1504430), (60, 1353987), (62, 1310310), (69, 1177380), (90, 902658), (92, 883035), (93, 873540), (108, 752215), (115, 706428), (124, 655155), (135, 601772), (138, 588690), (155, 524124), (180, 451329), (186, 436770), (207, 392460), (211, 385020), (230, 353214), (270, 300886), (276, 294345), (279, 291180), (310, 262062), (345, 235476), (372, 218385), (414, 196230), (422, 192510), (460, 176607), (465, 174708), (540, 150443), (558, 145590), (620, 131031), (621, 130820), (633, 128340), (690, 117738), (713, 113940), (828, 98115), (837, 97060), (844, 96255), (930, 87354), (1035, 78492), (1055, 77004), (1116, 72795), (1242, 65410), (1266, 64170), (1380, 58869), (1395, 58236), (1426, 56970), (1674, 48530), (1860, 43677), (1899, 42780), (2070, 39246), (2110, 38502), (2139, 37980), (2484, 32705), (2532, 32085), (2790, 29118), (2852, 28485), (3105, 26164), (3165, 25668), (3348, 24265), (3565, 22788), (3798, 21390), (4140, 19623), (4185, 19412), (4220, 19251), (4278, 18990), (4853, 16740), (5580, 14559), (5697, 14260), (6210, 13082), (6330, 12834), (6417, 12660), (6541, 12420), (7130, 11394), (7596, 10695), (8370, 9706), (8556, 9495)]