28668185

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9001}}^1$

素因数の和:9033

約数の個数: 24

約数和(自身を含む): 43101576

約数和(自身を除く): 14433391

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 9001, 45005, 63007, 117013, 315035, 441049, 585065, 819091, 2205245, 4095455, 5733637, 28668185]

約数ペア:

[(1, 28668185), (5, 5733637), (7, 4095455), (13, 2205245), (35, 819091), (49, 585065), (65, 441049), (91, 315035), (245, 117013), (455, 63007), (637, 45005), (3185, 9001)]