21891310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1129}}^1$

素因数の和:1420

約数の個数: 32

約数和(自身を含む): 45236160

約数和(自身を除く): 23344850

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1129, 1385, 1939, 2258, 2770, 3878, 5645, 7903, 9695, 11290, 15806, 19390, 39515, 79030, 312733, 625466, 1563665, 2189131, 3127330, 4378262, 10945655, 21891310]

約数ペア:

[(1, 21891310), (2, 10945655), (5, 4378262), (7, 3127330), (10, 2189131), (14, 1563665), (35, 625466), (70, 312733), (277, 79030), (554, 39515), (1129, 19390), (1385, 15806), (1939, 11290), (2258, 9695), (2770, 7903), (3878, 5645)]