21326565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109367}}^1$

素因数の和:109388

約数の個数: 16

約数和(自身を含む): 36747648

約数和(自身を除く): 15421083

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 109367, 328101, 546835, 1421771, 1640505, 4265313, 7108855, 21326565]

約数ペア:

[(1, 21326565), (3, 7108855), (5, 4265313), (13, 1640505), (15, 1421771), (39, 546835), (65, 328101), (195, 109367)]