19418399

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1071

約数の個数: 32

約数和(自身を含む): 27471360

約数和(自身を除く): 8052961

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1021, 1463, 1729, 2717, 7147, 11231, 13273, 19019, 19399, 78617, 92911, 135793, 146003, 213389, 252187, 1022021, 1493723, 1765309, 2774057, 19418399]

約数ペア:

[(1, 19418399), (7, 2774057), (11, 1765309), (13, 1493723), (19, 1022021), (77, 252187), (91, 213389), (133, 146003), (143, 135793), (209, 92911), (247, 78617), (1001, 19399), (1021, 19019), (1463, 13273), (1729, 11231), (2717, 7147)]