19697225

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:377

約数の個数: 24

約数和(自身を含む): 25435872

約数和(自身を除く): 5738647

約数列:

[1, 5, 25, 43, 73, 215, 251, 365, 1075, 1255, 1825, 3139, 6275, 10793, 15695, 18323, 53965, 78475, 91615, 269825, 458075, 787889, 3939445, 19697225]

約数ペア:

[(1, 19697225), (5, 3939445), (25, 787889), (43, 458075), (73, 269825), (215, 91615), (251, 78475), (365, 53965), (1075, 18323), (1255, 15695), (1825, 10793), (3139, 6275)]