21221565

素因数分解:

$3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{4463}}^1$

素因数の和:4788

約数の個数: 16

約数和(自身を含む): 34069248

約数和(自身を除く): 12847683

約数列:

[1, 3, 5, 15, 317, 951, 1585, 4463, 4755, 13389, 22315, 66945, 1414771, 4244313, 7073855, 21221565]

約数ペア:

[(1, 21221565), (3, 7073855), (5, 4244313), (15, 1414771), (317, 66945), (951, 22315), (1585, 13389), (4463, 4755)]