28239670

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{21557}}^1$

素因数の和:21695

約数の個数: 16

約数和(自身を含む): 51221808

約数和(自身を除く): 22982138

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 21557, 43114, 107785, 215570, 2823967, 5647934, 14119835, 28239670]

約数ペア:

[(1, 28239670), (2, 14119835), (5, 5647934), (10, 2823967), (131, 215570), (262, 107785), (655, 43114), (1310, 21557)]