640735970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{2273}}^1\times {\mathrm{4027}}^1$

素因数の和:6314

約数の個数: 32

約数和(自身を含む): 1318992768

約数和(自身を除く): 678256798

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 2273, 4027, 4546, 8054, 11365, 15911, 20135, 22730, 28189, 31822, 40270, 56378, 79555, 140945, 159110, 281890, 9153371, 18306742, 45766855, 64073597, 91533710, 128147194, 320367985, 640735970]

約数ペア:

[(1, 640735970), (2, 320367985), (5, 128147194), (7, 91533710), (10, 64073597), (14, 45766855), (35, 18306742), (70, 9153371), (2273, 281890), (4027, 159110), (4546, 140945), (8054, 79555), (11365, 56378), (15911, 40270), (20135, 31822), (22730, 28189)]