21049264

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4073}}^1$

素因数の和:4117

約数の個数: 40

約数和(自身を含む): 45465840

約数和(自身を除く): 24416576

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4073, 5168, 8146, 16292, 32584, 65168, 69241, 77387, 138482, 154774, 276964, 309548, 553928, 619096, 1107856, 1238192, 1315579, 2631158, 5262316, 10524632, 21049264]

約数ペア:

[(1, 21049264), (2, 10524632), (4, 5262316), (8, 2631158), (16, 1315579), (17, 1238192), (19, 1107856), (34, 619096), (38, 553928), (68, 309548), (76, 276964), (136, 154774), (152, 138482), (272, 77387), (304, 69241), (323, 65168), (646, 32584), (1292, 16292), (2584, 8146), (4073, 5168)]