20874555

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2099}}^1$

素因数の和:2140

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 20403045

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2099, 3315, 6297, 9945, 10495, 18891, 27287, 31485, 35683, 81861, 94455, 107049, 136435, 178415, 245583, 321147, 409305, 463879, 535245, 1227915, 1391637, 1605735, 2319395, 4174911, 6958185, 20874555]

約数ペア:

[(1, 20874555), (3, 6958185), (5, 4174911), (9, 2319395), (13, 1605735), (15, 1391637), (17, 1227915), (39, 535245), (45, 463879), (51, 409305), (65, 321147), (85, 245583), (117, 178415), (153, 136435), (195, 107049), (221, 94455), (255, 81861), (585, 35683), (663, 31485), (765, 27287), (1105, 18891), (1989, 10495), (2099, 9945), (3315, 6297)]