21392345

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{829}}^1$

素因数の和:1244

約数の個数: 16

約数和(自身を含む): 27748560

約数和(自身を除く): 6356215

約数列:

[1, 5, 13, 65, 397, 829, 1985, 4145, 5161, 10777, 25805, 53885, 329113, 1645565, 4278469, 21392345]

約数ペア:

[(1, 21392345), (5, 4278469), (13, 1645565), (65, 329113), (397, 53885), (829, 25805), (1985, 10777), (4145, 5161)]