20213648

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13883}}^1$

素因数の和:13911

約数の個数: 40

約数和(自身を含む): 48205248

約数和(自身を除く): 27991600

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13883, 27766, 55532, 97181, 111064, 180479, 194362, 222128, 360958, 388724, 721916, 777448, 1263353, 1443832, 1554896, 2526706, 2887664, 5053412, 10106824, 20213648]

約数ペア:

[(1, 20213648), (2, 10106824), (4, 5053412), (7, 2887664), (8, 2526706), (13, 1554896), (14, 1443832), (16, 1263353), (26, 777448), (28, 721916), (52, 388724), (56, 360958), (91, 222128), (104, 194362), (112, 180479), (182, 111064), (208, 97181), (364, 55532), (728, 27766), (1456, 13883)]