19553793

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7001}}^1$

素因数の和:7037

約数の個数: 24

約数和(自身を含む): 31929120

約数和(自身を除く): 12375327

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7001, 21003, 49007, 133019, 147021, 343049, 399057, 931133, 1029147, 2793399, 6517931, 19553793]

約数ペア:

[(1, 19553793), (3, 6517931), (7, 2793399), (19, 1029147), (21, 931133), (49, 399057), (57, 343049), (133, 147021), (147, 133019), (399, 49007), (931, 21003), (2793, 7001)]