21328610

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52021}}^1$

素因数の和:52069

約数の個数: 16

約数和(自身を含む): 39328632

約数和(自身を除く): 18000022

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52021, 104042, 260105, 520210, 2132861, 4265722, 10664305, 21328610]

約数ペア:

[(1, 21328610), (2, 10664305), (5, 4265722), (10, 2132861), (41, 520210), (82, 260105), (205, 104042), (410, 52021)]