21714280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77551}}^1$

素因数の和:77569

約数の個数: 32

約数和(自身を含む): 55837440

約数和(自身を除く): 34123160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77551, 155102, 310204, 387755, 542857, 620408, 775510, 1085714, 1551020, 2171428, 2714285, 3102040, 4342856, 5428570, 10857140, 21714280]

約数ペア:

[(1, 21714280), (2, 10857140), (4, 5428570), (5, 4342856), (7, 3102040), (8, 2714285), (10, 2171428), (14, 1551020), (20, 1085714), (28, 775510), (35, 620408), (40, 542857), (56, 387755), (70, 310204), (140, 155102), (280, 77551)]