81530460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41177}}^1$

素因数の和:41203

約数の個数: 72

約数和(自身を含む): 269798256

約数和(自身を除く): 188267796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41177, 82354, 123531, 164708, 205885, 247062, 370593, 411770, 452947, 494124, 617655, 741186, 823540, 905894, 1235310, 1358841, 1482372, 1811788, 1852965, 2264735, 2470620, 2717682, 3705930, 4076523, 4529470, 5435364, 6794205, 7411860, 8153046, 9058940, 13588410, 16306092, 20382615, 27176820, 40765230, 81530460]

約数ペア:

[(1, 81530460), (2, 40765230), (3, 27176820), (4, 20382615), (5, 16306092), (6, 13588410), (9, 9058940), (10, 8153046), (11, 7411860), (12, 6794205), (15, 5435364), (18, 4529470), (20, 4076523), (22, 3705930), (30, 2717682), (33, 2470620), (36, 2264735), (44, 1852965), (45, 1811788), (55, 1482372), (60, 1358841), (66, 1235310), (90, 905894), (99, 823540), (110, 741186), (132, 617655), (165, 494124), (180, 452947), (198, 411770), (220, 370593), (330, 247062), (396, 205885), (495, 164708), (660, 123531), (990, 82354), (1980, 41177)]