21030520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75109}}^1$

素因数の和:75127

約数の個数: 32

約数和(自身を含む): 54079200

約数和(自身を除く): 33048680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75109, 150218, 300436, 375545, 525763, 600872, 751090, 1051526, 1502180, 2103052, 2628815, 3004360, 4206104, 5257630, 10515260, 21030520]

約数ペア:

[(1, 21030520), (2, 10515260), (4, 5257630), (5, 4206104), (7, 3004360), (8, 2628815), (10, 2103052), (14, 1502180), (20, 1051526), (28, 751090), (35, 600872), (40, 525763), (56, 375545), (70, 300436), (140, 150218), (280, 75109)]