80903980

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{29527}}^1$

素因数の和:29673

約数の個数: 24

約数和(自身を含む): 171144288

約数和(自身を除く): 90240308

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 29527, 59054, 118108, 147635, 295270, 590540, 4045199, 8090398, 16180796, 20225995, 40451990, 80903980]

約数ペア:

[(1, 80903980), (2, 40451990), (4, 20225995), (5, 16180796), (10, 8090398), (20, 4045199), (137, 590540), (274, 295270), (548, 147635), (685, 118108), (1370, 59054), (2740, 29527)]