21216100

素因数分解:

$2^2\times 5^2\times {\mathrm{212161}}^1$

素因数の和:212175

約数の個数: 18

約数和(自身を含む): 46039154

約数和(自身を除く): 24823054

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212161, 424322, 848644, 1060805, 2121610, 4243220, 5304025, 10608050, 21216100]

約数ペア:

[(1, 21216100), (2, 10608050), (4, 5304025), (5, 4243220), (10, 2121610), (20, 1060805), (25, 848644), (50, 424322), (100, 212161)]