80100100

素因数分解:

$2^2\times 5^2\times {\mathrm{801001}}^1$

素因数の和:801015

約数の個数: 18

約数和(自身を含む): 173817434

約数和(自身を除く): 93717334

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 801001, 1602002, 3204004, 4005005, 8010010, 16020020, 20025025, 40050050, 80100100]

約数ペア:

[(1, 80100100), (2, 40050050), (4, 20025025), (5, 16020020), (10, 8010010), (20, 4005005), (25, 3204004), (50, 1602002), (100, 801001)]