21523445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{809}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 27468720

約数和(自身を除く): 5945275

約数列:

[1, 5, 17, 85, 313, 809, 1565, 4045, 5321, 13753, 26605, 68765, 253217, 1266085, 4304689, 21523445]

約数ペア:

[(1, 21523445), (5, 4304689), (17, 1266085), (85, 253217), (313, 68765), (809, 26605), (1565, 13753), (4045, 5321)]