21154485

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{4421}}^1$

素因数の和:4469

約数の個数: 32

約数和(自身を含む): 38206080

約数和(自身を除く): 17051595

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 87, 145, 165, 319, 435, 957, 1595, 4421, 4785, 13263, 22105, 48631, 66315, 128209, 145893, 243155, 384627, 641045, 729465, 1410299, 1923135, 4230897, 7051495, 21154485]

約数ペア:

[(1, 21154485), (3, 7051495), (5, 4230897), (11, 1923135), (15, 1410299), (29, 729465), (33, 641045), (55, 384627), (87, 243155), (145, 145893), (165, 128209), (319, 66315), (435, 48631), (957, 22105), (1595, 13263), (4421, 4785)]