21195904

素因数分解:

$2^7\times {\mathrm{43}}^1\times {\mathrm{3851}}^1$

素因数の和:3908

約数の個数: 32

約数和(自身を含む): 43219440

約数和(自身を除く): 22023536

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 344, 688, 1376, 2752, 3851, 5504, 7702, 15404, 30808, 61616, 123232, 165593, 246464, 331186, 492928, 662372, 1324744, 2649488, 5298976, 10597952, 21195904]

約数ペア:

[(1, 21195904), (2, 10597952), (4, 5298976), (8, 2649488), (16, 1324744), (32, 662372), (43, 492928), (64, 331186), (86, 246464), (128, 165593), (172, 123232), (344, 61616), (688, 30808), (1376, 15404), (2752, 7702), (3851, 5504)]