21538192

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103549}}^1$

素因数の和:103570

約数の個数: 20

約数和(自身を含む): 44940700

約数和(自身を除く): 23402508

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103549, 207098, 414196, 828392, 1346137, 1656784, 2692274, 5384548, 10769096, 21538192]

約数ペア:

[(1, 21538192), (2, 10769096), (4, 5384548), (8, 2692274), (13, 1656784), (16, 1346137), (26, 828392), (52, 414196), (104, 207098), (208, 103549)]