21939280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:364

約数の個数: 80

約数和(自身を含む): 56407104

約数和(自身を除く): 34467824

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 214, 220, 233, 428, 440, 466, 535, 856, 880, 932, 1070, 1165, 1177, 1712, 1864, 2140, 2330, 2354, 2563, 3728, 4280, 4660, 4708, 5126, 5885, 8560, 9320, 9416, 10252, 11770, 12815, 18640, 18832, 20504, 23540, 24931, 25630, 41008, 47080, 49862, 51260, 94160, 99724, 102520, 124655, 199448, 205040, 249310, 274241, 398896, 498620, 548482, 997240, 1096964, 1371205, 1994480, 2193928, 2742410, 4387856, 5484820, 10969640, 21939280]

約数ペア:

[(1, 21939280), (2, 10969640), (4, 5484820), (5, 4387856), (8, 2742410), (10, 2193928), (11, 1994480), (16, 1371205), (20, 1096964), (22, 997240), (40, 548482), (44, 498620), (55, 398896), (80, 274241), (88, 249310), (107, 205040), (110, 199448), (176, 124655), (214, 102520), (220, 99724), (233, 94160), (428, 51260), (440, 49862), (466, 47080), (535, 41008), (856, 25630), (880, 24931), (932, 23540), (1070, 20504), (1165, 18832), (1177, 18640), (1712, 12815), (1864, 11770), (2140, 10252), (2330, 9416), (2354, 9320), (2563, 8560), (3728, 5885), (4280, 5126), (4660, 4708)]