81202900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{28001}}^1$

素因数の和:28044

約数の個数: 36

約数和(自身を含む): 182293020

約数和(自身を除く): 101090120

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 145, 290, 580, 725, 1450, 2900, 28001, 56002, 112004, 140005, 280010, 560020, 700025, 812029, 1400050, 1624058, 2800100, 3248116, 4060145, 8120290, 16240580, 20300725, 40601450, 81202900]

約数ペア:

[(1, 81202900), (2, 40601450), (4, 20300725), (5, 16240580), (10, 8120290), (20, 4060145), (25, 3248116), (29, 2800100), (50, 1624058), (58, 1400050), (100, 812029), (116, 700025), (145, 560020), (290, 280010), (580, 140005), (725, 112004), (1450, 56002), (2900, 28001)]