21377356

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:335

約数の個数: 96

約数和(自身を含む): 53061120

約数和(自身を除く): 31683764

約数列:

[1, 2, 4, 7, 11, 13, 14, 19, 22, 26, 28, 38, 44, 52, 76, 77, 91, 133, 143, 154, 182, 209, 247, 266, 281, 286, 308, 364, 418, 494, 532, 562, 572, 836, 988, 1001, 1124, 1463, 1729, 1967, 2002, 2717, 2926, 3091, 3458, 3653, 3934, 4004, 5339, 5434, 5852, 6182, 6916, 7306, 7868, 10678, 10868, 12364, 14612, 19019, 21356, 21637, 25571, 37373, 38038, 40183, 43274, 51142, 58729, 69407, 74746, 76076, 80366, 86548, 102284, 117458, 138814, 149492, 160732, 234916, 277628, 281281, 411103, 485849, 562562, 763477, 822206, 971698, 1125124, 1526954, 1644412, 1943396, 3053908, 5344339, 10688678, 21377356]

約数ペア:

[(1, 21377356), (2, 10688678), (4, 5344339), (7, 3053908), (11, 1943396), (13, 1644412), (14, 1526954), (19, 1125124), (22, 971698), (26, 822206), (28, 763477), (38, 562562), (44, 485849), (52, 411103), (76, 281281), (77, 277628), (91, 234916), (133, 160732), (143, 149492), (154, 138814), (182, 117458), (209, 102284), (247, 86548), (266, 80366), (281, 76076), (286, 74746), (308, 69407), (364, 58729), (418, 51142), (494, 43274), (532, 40183), (562, 38038), (572, 37373), (836, 25571), (988, 21637), (1001, 21356), (1124, 19019), (1463, 14612), (1729, 12364), (1967, 10868), (2002, 10678), (2717, 7868), (2926, 7306), (3091, 6916), (3458, 6182), (3653, 5852), (3934, 5434), (4004, 5339)]