64171400

素因数分解:

$2^3\times 5^2\times {\mathrm{499}}^1\times {\mathrm{643}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 149730000

約数和(自身を除く): 85558600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 499, 643, 998, 1286, 1996, 2495, 2572, 3215, 3992, 4990, 5144, 6430, 9980, 12475, 12860, 16075, 19960, 24950, 25720, 32150, 49900, 64300, 99800, 128600, 320857, 641714, 1283428, 1604285, 2566856, 3208570, 6417140, 8021425, 12834280, 16042850, 32085700, 64171400]

約数ペア:

[(1, 64171400), (2, 32085700), (4, 16042850), (5, 12834280), (8, 8021425), (10, 6417140), (20, 3208570), (25, 2566856), (40, 1604285), (50, 1283428), (100, 641714), (200, 320857), (499, 128600), (643, 99800), (998, 64300), (1286, 49900), (1996, 32150), (2495, 25720), (2572, 24950), (3215, 19960), (3992, 16075), (4990, 12860), (5144, 12475), (6430, 9980)]