21084400

素因数分解:

$2^4\times 5^2\times {\mathrm{52711}}^1$

素因数の和:52729

約数の個数: 30

約数和(自身を含む): 50656232

約数和(自身を除く): 29571832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52711, 105422, 210844, 263555, 421688, 527110, 843376, 1054220, 1317775, 2108440, 2635550, 4216880, 5271100, 10542200, 21084400]

約数ペア:

[(1, 21084400), (2, 10542200), (4, 5271100), (5, 4216880), (8, 2635550), (10, 2108440), (16, 1317775), (20, 1054220), (25, 843376), (40, 527110), (50, 421688), (80, 263555), (100, 210844), (200, 105422), (400, 52711)]