388977200

素因数分解:

$2^4\times 5^2\times {\mathrm{972443}}^1$

素因数の和:972461

約数の個数: 30

約数和(自身を含む): 934518684

約数和(自身を除く): 545541484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 972443, 1944886, 3889772, 4862215, 7779544, 9724430, 15559088, 19448860, 24311075, 38897720, 48622150, 77795440, 97244300, 194488600, 388977200]

約数ペア:

[(1, 388977200), (2, 194488600), (4, 97244300), (5, 77795440), (8, 48622150), (10, 38897720), (16, 24311075), (20, 19448860), (25, 15559088), (40, 9724430), (50, 7779544), (80, 4862215), (100, 3889772), (200, 1944886), (400, 972443)]