20866620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{457}}^1\times {\mathrm{761}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 58631328

約数和(自身を除く): 37764708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 457, 761, 914, 1371, 1522, 1828, 2283, 2285, 2742, 3044, 3805, 4566, 4570, 5484, 6855, 7610, 9132, 9140, 11415, 13710, 15220, 22830, 27420, 45660, 347777, 695554, 1043331, 1391108, 1738885, 2086662, 3477770, 4173324, 5216655, 6955540, 10433310, 20866620]

約数ペア:

[(1, 20866620), (2, 10433310), (3, 6955540), (4, 5216655), (5, 4173324), (6, 3477770), (10, 2086662), (12, 1738885), (15, 1391108), (20, 1043331), (30, 695554), (60, 347777), (457, 45660), (761, 27420), (914, 22830), (1371, 15220), (1522, 13710), (1828, 11415), (2283, 9140), (2285, 9132), (2742, 7610), (3044, 6855), (3805, 5484), (4566, 4570)]