21288195

素因数分解:

$3^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1013}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 37015056

約数和(自身を除く): 15726861

約数列:

[1, 3, 5, 9, 15, 45, 467, 1013, 1401, 2335, 3039, 4203, 5065, 7005, 9117, 15195, 21015, 45585, 473071, 1419213, 2365355, 4257639, 7096065, 21288195]

約数ペア:

[(1, 21288195), (3, 7096065), (5, 4257639), (9, 2365355), (15, 1419213), (45, 473071), (467, 45585), (1013, 21015), (1401, 15195), (2335, 9117), (3039, 7005), (4203, 5065)]