81067480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 209018880

約数和(自身を除く): 127951400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 47, 52, 62, 65, 94, 104, 107, 124, 130, 155, 188, 214, 235, 248, 260, 310, 376, 403, 428, 470, 520, 535, 611, 620, 806, 856, 940, 1070, 1222, 1240, 1391, 1457, 1612, 1880, 2015, 2140, 2444, 2782, 2914, 3055, 3224, 3317, 4030, 4280, 4888, 5029, 5564, 5828, 6110, 6634, 6955, 7285, 8060, 10058, 11128, 11656, 12220, 13268, 13910, 14570, 16120, 16585, 18941, 20116, 24440, 25145, 26536, 27820, 29140, 33170, 37882, 40232, 43121, 50290, 55640, 58280, 65377, 66340, 75764, 86242, 94705, 100580, 130754, 132680, 151528, 155899, 172484, 189410, 201160, 215605, 261508, 311798, 326885, 344968, 378820, 431210, 523016, 623596, 653770, 757640, 779495, 862420, 1247192, 1307540, 1558990, 1724840, 2026687, 2615080, 3117980, 4053374, 6235960, 8106748, 10133435, 16213496, 20266870, 40533740, 81067480]

約数ペア:

[(1, 81067480), (2, 40533740), (4, 20266870), (5, 16213496), (8, 10133435), (10, 8106748), (13, 6235960), (20, 4053374), (26, 3117980), (31, 2615080), (40, 2026687), (47, 1724840), (52, 1558990), (62, 1307540), (65, 1247192), (94, 862420), (104, 779495), (107, 757640), (124, 653770), (130, 623596), (155, 523016), (188, 431210), (214, 378820), (235, 344968), (248, 326885), (260, 311798), (310, 261508), (376, 215605), (403, 201160), (428, 189410), (470, 172484), (520, 155899), (535, 151528), (611, 132680), (620, 130754), (806, 100580), (856, 94705), (940, 86242), (1070, 75764), (1222, 66340), (1240, 65377), (1391, 58280), (1457, 55640), (1612, 50290), (1880, 43121), (2015, 40232), (2140, 37882), (2444, 33170), (2782, 29140), (2914, 27820), (3055, 26536), (3224, 25145), (3317, 24440), (4030, 20116), (4280, 18941), (4888, 16585), (5029, 16120), (5564, 14570), (5828, 13910), (6110, 13268), (6634, 12220), (6955, 11656), (7285, 11128), (8060, 10058)]