278369

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:69

約数の個数: 24

約数和(自身を含む): 383040

約数和(自身を除く): 104671

約数列:

[1, 7, 13, 19, 23, 49, 91, 133, 161, 247, 299, 437, 637, 931, 1127, 1729, 2093, 3059, 5681, 12103, 14651, 21413, 39767, 278369]

約数ペア:

[(1, 278369), (7, 39767), (13, 21413), (19, 14651), (23, 12103), (49, 5681), (91, 3059), (133, 2093), (161, 1729), (247, 1127), (299, 931), (437, 637)]