21682220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154873}}^1$

素因数の和:154889

約数の個数: 24

約数和(自身を含む): 52037664

約数和(自身を除く): 30355444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154873, 309746, 619492, 774365, 1084111, 1548730, 2168222, 3097460, 4336444, 5420555, 10841110, 21682220]

約数ペア:

[(1, 21682220), (2, 10841110), (4, 5420555), (5, 4336444), (7, 3097460), (10, 2168222), (14, 1548730), (20, 1084111), (28, 774365), (35, 619492), (70, 309746), (140, 154873)]