21768065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4447}}^1$

素因数の和:4552

約数の個数: 16

約数和(自身を含む): 28823040

約数和(自身を除く): 7054975

約数列:

[1, 5, 11, 55, 89, 445, 979, 4447, 4895, 22235, 48917, 244585, 395783, 1978915, 4353613, 21768065]

約数ペア:

[(1, 21768065), (5, 4353613), (11, 1978915), (55, 395783), (89, 244585), (445, 48917), (979, 22235), (4447, 4895)]