1213971409

素因数分解:

$7^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1\times {\mathrm{1907}}^1$

素因数の和:2556

約数の個数: 16

約数和(自身を含む): 1397938176

約数和(自身を除く): 183966767

約数列:

[1, 7, 211, 431, 1477, 1907, 3017, 13349, 90941, 402377, 636587, 821917, 2816639, 5753419, 173424487, 1213971409]

約数ペア:

[(1, 1213971409), (7, 173424487), (211, 5753419), (431, 2816639), (1477, 821917), (1907, 636587), (3017, 402377), (13349, 90941)]