20991152

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1109}}^1$

素因数の和:1150

約数の個数: 60

約数和(自身を含む): 50376240

約数和(自身を除く): 29385088

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 169, 182, 208, 338, 364, 676, 728, 1109, 1183, 1352, 1456, 2218, 2366, 2704, 4436, 4732, 7763, 8872, 9464, 14417, 15526, 17744, 18928, 28834, 31052, 57668, 62104, 100919, 115336, 124208, 187421, 201838, 230672, 374842, 403676, 749684, 807352, 1311947, 1499368, 1614704, 2623894, 2998736, 5247788, 10495576, 20991152]

約数ペア:

[(1, 20991152), (2, 10495576), (4, 5247788), (7, 2998736), (8, 2623894), (13, 1614704), (14, 1499368), (16, 1311947), (26, 807352), (28, 749684), (52, 403676), (56, 374842), (91, 230672), (104, 201838), (112, 187421), (169, 124208), (182, 115336), (208, 100919), (338, 62104), (364, 57668), (676, 31052), (728, 28834), (1109, 18928), (1183, 17744), (1352, 15526), (1456, 14417), (2218, 9464), (2366, 8872), (2704, 7763), (4436, 4732)]