129006400

素因数分解:

$2^6\times 5^2\times {\mathrm{80629}}^1$

素因数の和:80651

約数の個数: 42

約数和(自身を含む): 317440310

約数和(自身を除く): 188433910

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 80629, 161258, 322516, 403145, 645032, 806290, 1290064, 1612580, 2015725, 2580128, 3225160, 4031450, 5160256, 6450320, 8062900, 12900640, 16125800, 25801280, 32251600, 64503200, 129006400]

約数ペア:

[(1, 129006400), (2, 64503200), (4, 32251600), (5, 25801280), (8, 16125800), (10, 12900640), (16, 8062900), (20, 6450320), (25, 5160256), (32, 4031450), (40, 3225160), (50, 2580128), (64, 2015725), (80, 1612580), (100, 1290064), (160, 806290), (200, 645032), (320, 403145), (400, 322516), (800, 161258), (1600, 80629)]