21505236477

素因数分解:

$3^1\times {\mathrm{523}}^1\times {\mathrm{977}}^1\times {\mathrm{14029}}^1$

素因数の和:15532

約数の個数: 16

約数和(自身を含む): 28759928640

約数和(自身を除く): 7254692163

約数列:

[1, 3, 523, 977, 1569, 2931, 14029, 42087, 510971, 1532913, 7337167, 13706333, 22011501, 41118999, 7168412159, 21505236477]

約数ペア:

[(1, 21505236477), (3, 7168412159), (523, 41118999), (977, 22011501), (1569, 13706333), (2931, 7337167), (14029, 1532913), (42087, 510971)]