20815812

素因数分解:

$2^2\times 3^3\times {\mathrm{97}}^1\times {\mathrm{1987}}^1$

素因数の和:2097

約数の個数: 48

約数和(自身を含む): 54550720

約数和(自身を除く): 33734908

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 97, 108, 194, 291, 388, 582, 873, 1164, 1746, 1987, 2619, 3492, 3974, 5238, 5961, 7948, 10476, 11922, 17883, 23844, 35766, 53649, 71532, 107298, 192739, 214596, 385478, 578217, 770956, 1156434, 1734651, 2312868, 3469302, 5203953, 6938604, 10407906, 20815812]

約数ペア:

[(1, 20815812), (2, 10407906), (3, 6938604), (4, 5203953), (6, 3469302), (9, 2312868), (12, 1734651), (18, 1156434), (27, 770956), (36, 578217), (54, 385478), (97, 214596), (108, 192739), (194, 107298), (291, 71532), (388, 53649), (582, 35766), (873, 23844), (1164, 17883), (1746, 11922), (1987, 10476), (2619, 7948), (3492, 5961), (3974, 5238)]