21280130

素因数分解:

$2^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7573}}^1$

素因数の和:7861

約数の個数: 16

約数和(自身を含む): 38445624

約数和(自身を除く): 17165494

約数列:

[1, 2, 5, 10, 281, 562, 1405, 2810, 7573, 15146, 37865, 75730, 2128013, 4256026, 10640065, 21280130]

約数ペア:

[(1, 21280130), (2, 10640065), (5, 4256026), (10, 2128013), (281, 75730), (562, 37865), (1405, 15146), (2810, 7573)]