81694980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{239}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 258572160

約数和(自身を除く): 176877180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 211, 239, 270, 324, 405, 422, 478, 540, 633, 717, 810, 844, 956, 1055, 1195, 1266, 1434, 1620, 1899, 2110, 2151, 2390, 2532, 2868, 3165, 3585, 3798, 4220, 4302, 4780, 5697, 6330, 6453, 7170, 7596, 8604, 9495, 10755, 11394, 12660, 12906, 14340, 17091, 18990, 19359, 21510, 22788, 25812, 28485, 32265, 34182, 37980, 38718, 43020, 50429, 56970, 64530, 68364, 77436, 85455, 96795, 100858, 113940, 129060, 151287, 170910, 193590, 201716, 252145, 302574, 341820, 387180, 453861, 504290, 605148, 756435, 907722, 1008580, 1361583, 1512870, 1815444, 2269305, 2723166, 3025740, 4084749, 4538610, 5446332, 6807915, 8169498, 9077220, 13615830, 16338996, 20423745, 27231660, 40847490, 81694980]

約数ペア:

[(1, 81694980), (2, 40847490), (3, 27231660), (4, 20423745), (5, 16338996), (6, 13615830), (9, 9077220), (10, 8169498), (12, 6807915), (15, 5446332), (18, 4538610), (20, 4084749), (27, 3025740), (30, 2723166), (36, 2269305), (45, 1815444), (54, 1512870), (60, 1361583), (81, 1008580), (90, 907722), (108, 756435), (135, 605148), (162, 504290), (180, 453861), (211, 387180), (239, 341820), (270, 302574), (324, 252145), (405, 201716), (422, 193590), (478, 170910), (540, 151287), (633, 129060), (717, 113940), (810, 100858), (844, 96795), (956, 85455), (1055, 77436), (1195, 68364), (1266, 64530), (1434, 56970), (1620, 50429), (1899, 43020), (2110, 38718), (2151, 37980), (2390, 34182), (2532, 32265), (2868, 28485), (3165, 25812), (3585, 22788), (3798, 21510), (4220, 19359), (4302, 18990), (4780, 17091), (5697, 14340), (6330, 12906), (6453, 12660), (7170, 11394), (7596, 10755), (8604, 9495)]