131181456

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{390421}}^1$

素因数の和:390439

約数の個数: 40

約数和(自身を含む): 387298624

約数和(自身を除く): 256117168

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 390421, 780842, 1171263, 1561684, 2342526, 2732947, 3123368, 4685052, 5465894, 6246736, 8198841, 9370104, 10931788, 16397682, 18740208, 21863576, 32795364, 43727152, 65590728, 131181456]

約数ペア:

[(1, 131181456), (2, 65590728), (3, 43727152), (4, 32795364), (6, 21863576), (7, 18740208), (8, 16397682), (12, 10931788), (14, 9370104), (16, 8198841), (21, 6246736), (24, 5465894), (28, 4685052), (42, 3123368), (48, 2732947), (56, 2342526), (84, 1561684), (112, 1171263), (168, 780842), (336, 390421)]