25121439

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 45127680

約数和(自身を除く): 20006241

約数列:

[1, 3, 7, 9, 19, 21, 31, 57, 63, 93, 133, 171, 217, 279, 399, 589, 651, 677, 1197, 1767, 1953, 2031, 4123, 4739, 5301, 6093, 12369, 12863, 14217, 20987, 37107, 38589, 42651, 62961, 90041, 115767, 146909, 188883, 270123, 398753, 440727, 810369, 1196259, 1322181, 2791271, 3588777, 8373813, 25121439]

約数ペア:

[(1, 25121439), (3, 8373813), (7, 3588777), (9, 2791271), (19, 1322181), (21, 1196259), (31, 810369), (57, 440727), (63, 398753), (93, 270123), (133, 188883), (171, 146909), (217, 115767), (279, 90041), (399, 62961), (589, 42651), (651, 38589), (677, 37107), (1197, 20987), (1767, 14217), (1953, 12863), (2031, 12369), (4123, 6093), (4739, 5301)]