21960680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{733}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 57075840

約数和(自身を除く): 35115160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 214, 280, 428, 535, 733, 749, 856, 1070, 1466, 1498, 2140, 2932, 2996, 3665, 3745, 4280, 5131, 5864, 5992, 7330, 7490, 10262, 14660, 14980, 20524, 25655, 29320, 29960, 41048, 51310, 78431, 102620, 156862, 205240, 313724, 392155, 549017, 627448, 784310, 1098034, 1568620, 2196068, 2745085, 3137240, 4392136, 5490170, 10980340, 21960680]

約数ペア:

[(1, 21960680), (2, 10980340), (4, 5490170), (5, 4392136), (7, 3137240), (8, 2745085), (10, 2196068), (14, 1568620), (20, 1098034), (28, 784310), (35, 627448), (40, 549017), (56, 392155), (70, 313724), (107, 205240), (140, 156862), (214, 102620), (280, 78431), (428, 51310), (535, 41048), (733, 29960), (749, 29320), (856, 25655), (1070, 20524), (1466, 14980), (1498, 14660), (2140, 10262), (2932, 7490), (2996, 7330), (3665, 5992), (3745, 5864), (4280, 5131)]