621040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1109}}^1$

素因数の和:1129

約数の個数: 40

約数和(自身を含む): 1651680

約数和(自身を除く): 1030640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1109, 2218, 4436, 5545, 7763, 8872, 11090, 15526, 17744, 22180, 31052, 38815, 44360, 62104, 77630, 88720, 124208, 155260, 310520, 621040]

約数ペア:

[(1, 621040), (2, 310520), (4, 155260), (5, 124208), (7, 88720), (8, 77630), (10, 62104), (14, 44360), (16, 38815), (20, 31052), (28, 22180), (35, 17744), (40, 15526), (56, 11090), (70, 8872), (80, 7763), (112, 5545), (140, 4436), (280, 2218), (560, 1109)]