21975668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{373}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 45741696

約数和(自身を除く): 23766028

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 103, 143, 206, 286, 373, 412, 572, 746, 1133, 1339, 1492, 2266, 2678, 4103, 4532, 4849, 5356, 8206, 9698, 14729, 16412, 19396, 29458, 38419, 53339, 58916, 76838, 106678, 153676, 213356, 422609, 499447, 845218, 998894, 1690436, 1997788, 5493917, 10987834, 21975668]

約数ペア:

[(1, 21975668), (2, 10987834), (4, 5493917), (11, 1997788), (13, 1690436), (22, 998894), (26, 845218), (44, 499447), (52, 422609), (103, 213356), (143, 153676), (206, 106678), (286, 76838), (373, 58916), (412, 53339), (572, 38419), (746, 29458), (1133, 19396), (1339, 16412), (1492, 14729), (2266, 9698), (2678, 8206), (4103, 5356), (4532, 4849)]