21697918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{5449}}^1$

素因数の和:5643

約数の個数: 16

約数和(自身を含む): 35708400

約数和(自身を除く): 14010482

約数列:

[1, 2, 11, 22, 181, 362, 1991, 3982, 5449, 10898, 59939, 119878, 986269, 1972538, 10848959, 21697918]

約数ペア:

[(1, 21697918), (2, 10848959), (11, 1972538), (22, 986269), (181, 119878), (362, 59939), (1991, 10898), (3982, 5449)]