278399979

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{216317}}^1$

素因数の和:216347

約数の個数: 24

約数和(自身を含む): 472438512

約数和(自身を除く): 194038533

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287, 216317, 648951, 1946853, 2379487, 2812121, 7138461, 8436363, 21415383, 25309089, 30933331, 92799993, 278399979]

約数ペア:

[(1, 278399979), (3, 92799993), (9, 30933331), (11, 25309089), (13, 21415383), (33, 8436363), (39, 7138461), (99, 2812121), (117, 2379487), (143, 1946853), (429, 648951), (1287, 216317)]