80791600

素因数分解:

$2^4\times 5^2\times {\mathrm{201979}}^1$

素因数の和:201997

約数の個数: 30

約数和(自身を含む): 194102780

約数和(自身を除く): 113311180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201979, 403958, 807916, 1009895, 1615832, 2019790, 3231664, 4039580, 5049475, 8079160, 10098950, 16158320, 20197900, 40395800, 80791600]

約数ペア:

[(1, 80791600), (2, 40395800), (4, 20197900), (5, 16158320), (8, 10098950), (10, 8079160), (16, 5049475), (20, 4039580), (25, 3231664), (40, 2019790), (50, 1615832), (80, 1009895), (100, 807916), (200, 403958), (400, 201979)]