20866911

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 32051712

約数和(自身を除く): 11184801

約数列:

[1, 3, 13, 23, 39, 43, 69, 129, 299, 541, 559, 897, 989, 1623, 1677, 2967, 7033, 12443, 12857, 21099, 23263, 37329, 38571, 69789, 161759, 302419, 485277, 535049, 907257, 1605147, 6955637, 20866911]

約数ペア:

[(1, 20866911), (3, 6955637), (13, 1605147), (23, 907257), (39, 535049), (43, 485277), (69, 302419), (129, 161759), (299, 69789), (541, 38571), (559, 37329), (897, 23263), (989, 21099), (1623, 12857), (1677, 12443), (2967, 7033)]