19802780

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9613}}^1$

素因数の和:9725

約数の個数: 24

約数和(自身を含む): 41993952

約数和(自身を除く): 22191172

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9613, 19226, 38452, 48065, 96130, 192260, 990139, 1980278, 3960556, 4950695, 9901390, 19802780]

約数ペア:

[(1, 19802780), (2, 9901390), (4, 4950695), (5, 3960556), (10, 1980278), (20, 990139), (103, 192260), (206, 96130), (412, 48065), (515, 38452), (1030, 19226), (2060, 9613)]