21746140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83639}}^1$

素因数の和:83661

約数の個数: 24

約数和(自身を含む): 49180320

約数和(自身を除く): 27434180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83639, 167278, 334556, 418195, 836390, 1087307, 1672780, 2174614, 4349228, 5436535, 10873070, 21746140]

約数ペア:

[(1, 21746140), (2, 10873070), (4, 5436535), (5, 4349228), (10, 2174614), (13, 1672780), (20, 1087307), (26, 836390), (52, 418195), (65, 334556), (130, 167278), (260, 83639)]