261213456

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{777421}}^1$

素因数の和:777439

約数の個数: 40

約数和(自身を含む): 771202624

約数和(自身を除く): 509989168

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 777421, 1554842, 2332263, 3109684, 4664526, 5441947, 6219368, 9329052, 10883894, 12438736, 16325841, 18658104, 21767788, 32651682, 37316208, 43535576, 65303364, 87071152, 130606728, 261213456]

約数ペア:

[(1, 261213456), (2, 130606728), (3, 87071152), (4, 65303364), (6, 43535576), (7, 37316208), (8, 32651682), (12, 21767788), (14, 18658104), (16, 16325841), (21, 12438736), (24, 10883894), (28, 9329052), (42, 6219368), (48, 5441947), (56, 4664526), (84, 3109684), (112, 2332263), (168, 1554842), (336, 777421)]