21204255

素因数分解:

$3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{6173}}^1$

素因数の和:6410

約数の個数: 16

約数和(自身を含む): 34080480

約数和(自身を除く): 12876225

約数列:

[1, 3, 5, 15, 229, 687, 1145, 3435, 6173, 18519, 30865, 92595, 1413617, 4240851, 7068085, 21204255]

約数ペア:

[(1, 21204255), (3, 7068085), (5, 4240851), (15, 1413617), (229, 92595), (687, 30865), (1145, 18519), (3435, 6173)]