21079965

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{17789}}^1$

素因数の和:17876

約数の個数: 16

約数和(自身を含む): 34156800

約数和(自身を除く): 13076835

約数列:

[1, 3, 5, 15, 79, 237, 395, 1185, 17789, 53367, 88945, 266835, 1405331, 4215993, 7026655, 21079965]

約数ペア:

[(1, 21079965), (3, 7026655), (5, 4215993), (15, 1405331), (79, 266835), (237, 88945), (395, 53367), (1185, 17789)]