21530585

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8171}}^1$

素因数の和:8224

約数の個数: 16

約数和(自身を含む): 28242432

約数和(自身を除く): 6711847

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8171, 40855, 138907, 253301, 694535, 1266505, 4306117, 21530585]

約数ペア:

[(1, 21530585), (5, 4306117), (17, 1266505), (31, 694535), (85, 253301), (155, 138907), (527, 40855), (2635, 8171)]