131315856

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{390821}}^1$

素因数の和:390839

約数の個数: 40

約数和(自身を含む): 387695424

約数和(自身を除く): 256379568

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 390821, 781642, 1172463, 1563284, 2344926, 2735747, 3126568, 4689852, 5471494, 6253136, 8207241, 9379704, 10942988, 16414482, 18759408, 21885976, 32828964, 43771952, 65657928, 131315856]

約数ペア:

[(1, 131315856), (2, 65657928), (3, 43771952), (4, 32828964), (6, 21885976), (7, 18759408), (8, 16414482), (12, 10942988), (14, 9379704), (16, 8207241), (21, 6253136), (24, 5471494), (28, 4689852), (42, 3126568), (48, 2735747), (56, 2344926), (84, 1563284), (112, 1172463), (168, 781642), (336, 390821)]