20997288

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{22433}}^1$

素因数の和:22458

約数の個数: 48

約数和(自身を含む): 61244820

約数和(自身を除く): 40247532

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 22433, 44866, 67299, 89732, 134598, 179464, 201897, 269196, 291629, 403794, 538392, 583258, 807588, 874887, 1166516, 1615176, 1749774, 2333032, 2624661, 3499548, 5249322, 6999096, 10498644, 20997288]

約数ペア:

[(1, 20997288), (2, 10498644), (3, 6999096), (4, 5249322), (6, 3499548), (8, 2624661), (9, 2333032), (12, 1749774), (13, 1615176), (18, 1166516), (24, 874887), (26, 807588), (36, 583258), (39, 538392), (52, 403794), (72, 291629), (78, 269196), (104, 201897), (117, 179464), (156, 134598), (234, 89732), (312, 67299), (468, 44866), (936, 22433)]