28209349

素因数分解:

$7^4\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:438

約数の個数: 20

約数和(自身を含む): 34060160

約数和(自身を除く): 5850811

約数列:

[1, 7, 31, 49, 217, 343, 379, 1519, 2401, 2653, 10633, 11749, 18571, 74431, 82243, 129997, 575701, 909979, 4029907, 28209349]

約数ペア:

[(1, 28209349), (7, 4029907), (31, 909979), (49, 575701), (217, 129997), (343, 82243), (379, 74431), (1519, 18571), (2401, 11749), (2653, 10633)]