21790293925

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{47}}^2\times {\mathrm{1093}}^1$

素因数の和:1235

約数の個数: 54

約数和(自身を含む): 29163225138

約数和(自身を除く): 7372931213

約数列:

[1, 5, 19, 25, 47, 95, 235, 361, 475, 893, 1093, 1175, 1805, 2209, 4465, 5465, 9025, 11045, 16967, 20767, 22325, 27325, 41971, 51371, 55225, 84835, 103835, 209855, 256855, 394573, 424175, 519175, 797449, 976049, 1049275, 1284275, 1972865, 2414437, 3987245, 4880245, 9864325, 12072185, 18544931, 19936225, 24401225, 45874303, 60360925, 92724655, 229371515, 463623275, 871611757, 1146857575, 4358058785, 21790293925]

約数ペア:

[(1, 21790293925), (5, 4358058785), (19, 1146857575), (25, 871611757), (47, 463623275), (95, 229371515), (235, 92724655), (361, 60360925), (475, 45874303), (893, 24401225), (1093, 19936225), (1175, 18544931), (1805, 12072185), (2209, 9864325), (4465, 4880245), (5465, 3987245), (9025, 2414437), (11045, 1972865), (16967, 1284275), (20767, 1049275), (22325, 976049), (27325, 797449), (41971, 519175), (51371, 424175), (55225, 394573), (84835, 256855), (103835, 209855)]