67520920

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2609}}^1$

素因数の和:3267

約数の個数: 32

約数和(自身を含む): 152215200

約数和(自身を除く): 84694280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 2609, 3235, 5176, 5218, 6470, 10436, 12940, 13045, 20872, 25880, 26090, 52180, 104360, 1688023, 3376046, 6752092, 8440115, 13504184, 16880230, 33760460, 67520920]

約数ペア:

[(1, 67520920), (2, 33760460), (4, 16880230), (5, 13504184), (8, 8440115), (10, 6752092), (20, 3376046), (40, 1688023), (647, 104360), (1294, 52180), (2588, 26090), (2609, 25880), (3235, 20872), (5176, 13045), (5218, 12940), (6470, 10436)]