21360275

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{233}}^1$

素因数の和:455

約数の個数: 24

約数和(自身を含む): 28145520

約数和(自身を除く): 6785245

約数列:

[1, 5, 19, 25, 95, 193, 233, 475, 965, 1165, 3667, 4427, 4825, 5825, 18335, 22135, 44969, 91675, 110675, 224845, 854411, 1124225, 4272055, 21360275]

約数ペア:

[(1, 21360275), (5, 4272055), (19, 1124225), (25, 854411), (95, 224845), (193, 110675), (233, 91675), (475, 44969), (965, 22135), (1165, 18335), (3667, 5825), (4427, 4825)]