81620980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{583007}}^1$

素因数の和:583023

約数の個数: 24

約数和(自身を含む): 195890688

約数和(自身を除く): 114269708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 583007, 1166014, 2332028, 2915035, 4081049, 5830070, 8162098, 11660140, 16324196, 20405245, 40810490, 81620980]

約数ペア:

[(1, 81620980), (2, 40810490), (4, 20405245), (5, 16324196), (7, 11660140), (10, 8162098), (14, 5830070), (20, 4081049), (28, 2915035), (35, 2332028), (70, 1166014), (140, 583007)]