21281688

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^1\times {\mathrm{17387}}^1$

素因数の和:17416

約数の個数: 48

約数和(自身を含む): 61031880

約数和(自身を除く): 39750192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 136, 153, 204, 306, 408, 612, 1224, 17387, 34774, 52161, 69548, 104322, 139096, 156483, 208644, 295579, 312966, 417288, 591158, 625932, 886737, 1182316, 1251864, 1773474, 2364632, 2660211, 3546948, 5320422, 7093896, 10640844, 21281688]

約数ペア:

[(1, 21281688), (2, 10640844), (3, 7093896), (4, 5320422), (6, 3546948), (8, 2660211), (9, 2364632), (12, 1773474), (17, 1251864), (18, 1182316), (24, 886737), (34, 625932), (36, 591158), (51, 417288), (68, 312966), (72, 295579), (102, 208644), (136, 156483), (153, 139096), (204, 104322), (306, 69548), (408, 52161), (612, 34774), (1224, 17387)]