20986108

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1931}}^1$

素因数の和:1978

約数の個数: 48

約数和(自身を含む): 45440640

約数和(自身を除く): 24454532

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 209, 247, 286, 418, 494, 572, 836, 988, 1931, 2717, 3862, 5434, 7724, 10868, 21241, 25103, 36689, 42482, 50206, 73378, 84964, 100412, 146756, 276133, 403579, 476957, 552266, 807158, 953914, 1104532, 1614316, 1907828, 5246527, 10493054, 20986108]

約数ペア:

[(1, 20986108), (2, 10493054), (4, 5246527), (11, 1907828), (13, 1614316), (19, 1104532), (22, 953914), (26, 807158), (38, 552266), (44, 476957), (52, 403579), (76, 276133), (143, 146756), (209, 100412), (247, 84964), (286, 73378), (418, 50206), (494, 42482), (572, 36689), (836, 25103), (988, 21241), (1931, 10868), (2717, 7724), (3862, 5434)]