21143005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3919}}^1$

素因数の和:4020

約数の個数: 16

約数和(自身を含む): 27659520

約数和(自身を除く): 6516515

約数列:

[1, 5, 13, 65, 83, 415, 1079, 3919, 5395, 19595, 50947, 254735, 325277, 1626385, 4228601, 21143005]

約数ペア:

[(1, 21143005), (5, 4228601), (13, 1626385), (65, 325277), (83, 254735), (415, 50947), (1079, 19595), (3919, 5395)]