2100100

素因数分解:

$2^2\times 5^2\times {\mathrm{21001}}^1$

素因数の和:21015

約数の個数: 18

約数和(自身を含む): 4557434

約数和(自身を除く): 2457334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 21001, 42002, 84004, 105005, 210010, 420020, 525025, 1050050, 2100100]

約数ペア:

[(1, 2100100), (2, 1050050), (4, 525025), (5, 420020), (10, 210010), (20, 105005), (25, 84004), (50, 42002), (100, 21001)]