21915265

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1171}}^1$

素因数の和:1392

約数の個数: 16

約数和(自身を含む): 27846720

約数和(自身を除く): 5931455

約数列:

[1, 5, 19, 95, 197, 985, 1171, 3743, 5855, 18715, 22249, 111245, 230687, 1153435, 4383053, 21915265]

約数ペア:

[(1, 21915265), (5, 4383053), (19, 1153435), (95, 230687), (197, 111245), (985, 22249), (1171, 18715), (3743, 5855)]