21891716

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:189

約数の個数: 96

約数和(自身を含む): 52399872

約数和(自身を除く): 30508156

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 37, 44, 68, 74, 77, 113, 119, 148, 154, 187, 226, 238, 259, 308, 374, 407, 452, 476, 518, 629, 748, 791, 814, 1036, 1243, 1258, 1309, 1582, 1628, 1921, 2486, 2516, 2618, 2849, 3164, 3842, 4181, 4403, 4972, 5236, 5698, 6919, 7684, 8362, 8701, 8806, 11396, 13447, 13838, 16724, 17402, 17612, 21131, 26894, 27676, 29267, 34804, 42262, 45991, 48433, 53788, 58534, 71077, 84524, 91982, 96866, 117068, 142154, 147917, 183964, 193732, 284308, 295834, 321937, 497539, 591668, 643874, 781847, 995078, 1287748, 1563694, 1990156, 3127388, 5472929, 10945858, 21891716]

約数ペア:

[(1, 21891716), (2, 10945858), (4, 5472929), (7, 3127388), (11, 1990156), (14, 1563694), (17, 1287748), (22, 995078), (28, 781847), (34, 643874), (37, 591668), (44, 497539), (68, 321937), (74, 295834), (77, 284308), (113, 193732), (119, 183964), (148, 147917), (154, 142154), (187, 117068), (226, 96866), (238, 91982), (259, 84524), (308, 71077), (374, 58534), (407, 53788), (452, 48433), (476, 45991), (518, 42262), (629, 34804), (748, 29267), (791, 27676), (814, 26894), (1036, 21131), (1243, 17612), (1258, 17402), (1309, 16724), (1582, 13838), (1628, 13447), (1921, 11396), (2486, 8806), (2516, 8701), (2618, 8362), (2849, 7684), (3164, 6919), (3842, 5698), (4181, 5236), (4403, 4972)]