19909384

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{233}}^1\times {\mathrm{971}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 40940640

約数和(自身を除く): 21031256

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 233, 466, 932, 971, 1864, 1942, 2563, 3884, 5126, 7768, 10252, 10681, 20504, 21362, 42724, 85448, 226243, 452486, 904972, 1809944, 2488673, 4977346, 9954692, 19909384]

約数ペア:

[(1, 19909384), (2, 9954692), (4, 4977346), (8, 2488673), (11, 1809944), (22, 904972), (44, 452486), (88, 226243), (233, 85448), (466, 42724), (932, 21362), (971, 20504), (1864, 10681), (1942, 10252), (2563, 7768), (3884, 5126)]