19135921

素因数分解:

$7^2\times {\mathrm{149}}^1\times {\mathrm{2621}}^1$

素因数の和:2784

約数の個数: 12

約数和(自身を含む): 22418100

約数和(自身を除く): 3282179

約数列:

[1, 7, 49, 149, 1043, 2621, 7301, 18347, 128429, 390529, 2733703, 19135921]

約数ペア:

[(1, 19135921), (7, 2733703), (49, 390529), (149, 128429), (1043, 18347), (2621, 7301)]