21001065

素因数分解:

$3^1\times 5^1\times {\mathrm{523}}^1\times {\mathrm{2677}}^1$

素因数の和:3208

約数の個数: 16

約数和(自身を含む): 33678528

約数和(自身を除く): 12677463

約数列:

[1, 3, 5, 15, 523, 1569, 2615, 2677, 7845, 8031, 13385, 40155, 1400071, 4200213, 7000355, 21001065]

約数ペア:

[(1, 21001065), (3, 7000355), (5, 4200213), (15, 1400071), (523, 40155), (1569, 13385), (2615, 8031), (2677, 7845)]