21394995

素因数分解:

$3^1\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1451}}^1$

素因数の和:2442

約数の個数: 16

約数和(自身を含む): 34290432

約数和(自身を除く): 12895437

約数列:

[1, 3, 5, 15, 983, 1451, 2949, 4353, 4915, 7255, 14745, 21765, 1426333, 4278999, 7131665, 21394995]

約数ペア:

[(1, 21394995), (3, 7131665), (5, 4278999), (15, 1426333), (983, 21765), (1451, 14745), (2949, 7255), (4353, 4915)]