18713331

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 33831616

約数和(自身を除く): 15118285

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 73, 91, 117, 219, 273, 313, 511, 657, 819, 939, 949, 1533, 2191, 2817, 2847, 4069, 4599, 6573, 6643, 8541, 12207, 19719, 19929, 22849, 28483, 36621, 59787, 68547, 85449, 159943, 205641, 256347, 297037, 479829, 891111, 1439487, 2079259, 2673333, 6237777, 18713331]

約数ペア:

[(1, 18713331), (3, 6237777), (7, 2673333), (9, 2079259), (13, 1439487), (21, 891111), (39, 479829), (63, 297037), (73, 256347), (91, 205641), (117, 159943), (219, 85449), (273, 68547), (313, 59787), (511, 36621), (657, 28483), (819, 22849), (939, 19929), (949, 19719), (1533, 12207), (2191, 8541), (2817, 6643), (2847, 6573), (4069, 4599)]