20981736

素因数分解:

$2^3\times 3^2\times {\mathrm{83}}^1\times {\mathrm{3511}}^1$

素因数の和:3606

約数の個数: 48

約数和(自身を含む): 57526560

約数和(自身を除く): 36544824

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 83, 166, 249, 332, 498, 664, 747, 996, 1494, 1992, 2988, 3511, 5976, 7022, 10533, 14044, 21066, 28088, 31599, 42132, 63198, 84264, 126396, 252792, 291413, 582826, 874239, 1165652, 1748478, 2331304, 2622717, 3496956, 5245434, 6993912, 10490868, 20981736]

約数ペア:

[(1, 20981736), (2, 10490868), (3, 6993912), (4, 5245434), (6, 3496956), (8, 2622717), (9, 2331304), (12, 1748478), (18, 1165652), (24, 874239), (36, 582826), (72, 291413), (83, 252792), (166, 126396), (249, 84264), (332, 63198), (498, 42132), (664, 31599), (747, 28088), (996, 21066), (1494, 14044), (1992, 10533), (2988, 7022), (3511, 5976)]