278901

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 486720

約数和(自身を除く): 207819

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 233, 399, 699, 1197, 1631, 2097, 4427, 4893, 13281, 14679, 30989, 39843, 92967, 278901]

約数ペア:

[(1, 278901), (3, 92967), (7, 39843), (9, 30989), (19, 14679), (21, 13281), (57, 4893), (63, 4427), (133, 2097), (171, 1631), (233, 1197), (399, 699)]