213789025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{21871}}^1$

素因数の和:21921

約数の個数: 24

約数和(自身を含む): 292909824

約数和(自身を除く): 79120799

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 9775, 21871, 109355, 371807, 503033, 546775, 1859035, 2515165, 8551561, 9295175, 12575825, 42757805, 213789025]

約数ペア:

[(1, 213789025), (5, 42757805), (17, 12575825), (23, 9295175), (25, 8551561), (85, 2515165), (115, 1859035), (391, 546775), (425, 503033), (575, 371807), (1955, 109355), (9775, 21871)]