21366855

素因数分解:

$3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{971}}^1$

素因数の和:1148

約数の個数: 32

約数和(自身を含む): 38257920

約数和(自身を除く): 16891065

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 163, 489, 815, 971, 1467, 2445, 2913, 4401, 4855, 7335, 8739, 14565, 22005, 26217, 43695, 131085, 158273, 474819, 791365, 1424457, 2374095, 4273371, 7122285, 21366855]

約数ペア:

[(1, 21366855), (3, 7122285), (5, 4273371), (9, 2374095), (15, 1424457), (27, 791365), (45, 474819), (135, 158273), (163, 131085), (489, 43695), (815, 26217), (971, 22005), (1467, 14565), (2445, 8739), (2913, 7335), (4401, 4855)]