21371135

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 26376192

約数和(自身を除く): 5005057

約数列:

[1, 5, 47, 211, 235, 431, 1055, 2155, 9917, 20257, 49585, 90941, 101285, 454705, 4274227, 21371135]

約数ペア:

[(1, 21371135), (5, 4274227), (47, 454705), (211, 101285), (235, 90941), (431, 49585), (1055, 20257), (2155, 9917)]