2800100

素因数分解:

$2^2\times 5^2\times {\mathrm{28001}}^1$

素因数の和:28015

約数の個数: 18

約数和(自身を含む): 6076434

約数和(自身を除く): 3276334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 28001, 56002, 112004, 140005, 280010, 560020, 700025, 1400050, 2800100]

約数ペア:

[(1, 2800100), (2, 1400050), (4, 700025), (5, 560020), (10, 280010), (20, 140005), (25, 112004), (50, 56002), (100, 28001)]