20961288

素因数分解:

$2^3\times 3^3\times {\mathrm{53}}^1\times {\mathrm{1831}}^1$

素因数の和:1899

約数の個数: 64

約数和(自身を含む): 59356800

約数和(自身を除く): 38395512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 53, 54, 72, 106, 108, 159, 212, 216, 318, 424, 477, 636, 954, 1272, 1431, 1831, 1908, 2862, 3662, 3816, 5493, 5724, 7324, 10986, 11448, 14648, 16479, 21972, 32958, 43944, 49437, 65916, 97043, 98874, 131832, 194086, 197748, 291129, 388172, 395496, 582258, 776344, 873387, 1164516, 1746774, 2329032, 2620161, 3493548, 5240322, 6987096, 10480644, 20961288]

約数ペア:

[(1, 20961288), (2, 10480644), (3, 6987096), (4, 5240322), (6, 3493548), (8, 2620161), (9, 2329032), (12, 1746774), (18, 1164516), (24, 873387), (27, 776344), (36, 582258), (53, 395496), (54, 388172), (72, 291129), (106, 197748), (108, 194086), (159, 131832), (212, 98874), (216, 97043), (318, 65916), (424, 49437), (477, 43944), (636, 32958), (954, 21972), (1272, 16479), (1431, 14648), (1831, 11448), (1908, 10986), (2862, 7324), (3662, 5724), (3816, 5493)]