64704820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{33353}}^1$

素因数の和:33459

約数の個数: 24

約数和(自身を含む): 137285064

約数和(自身を除く): 72580244

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 33353, 66706, 133412, 166765, 333530, 667060, 3235241, 6470482, 12940964, 16176205, 32352410, 64704820]

約数ペア:

[(1, 64704820), (2, 32352410), (4, 16176205), (5, 12940964), (10, 6470482), (20, 3235241), (97, 667060), (194, 333530), (388, 166765), (485, 133412), (970, 66706), (1940, 33353)]