21002275

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2791}}^1$

素因数の和:2851

約数の個数: 24

約数和(自身を含む): 30466304

約数和(自身を除く): 9464029

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2791, 7525, 13955, 19537, 69775, 97685, 120013, 488425, 600065, 840091, 3000325, 4200455, 21002275]

約数ペア:

[(1, 21002275), (5, 4200455), (7, 3000325), (25, 840091), (35, 600065), (43, 488425), (175, 120013), (215, 97685), (301, 69775), (1075, 19537), (1505, 13955), (2791, 7525)]