21360321

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{5039}}^1$

素因数の和:5205

約数の個数: 16

約数和(自身を含む): 31852800

約数和(自身を除く): 10492479

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 5039, 15117, 45351, 136053, 791123, 2373369, 7120107, 21360321]

約数ペア:

[(1, 21360321), (3, 7120107), (9, 2373369), (27, 791123), (157, 136053), (471, 45351), (1413, 15117), (4239, 5039)]