64821220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{33413}}^1$

素因数の和:33519

約数の個数: 24

約数和(自身を含む): 137532024

約数和(自身を除く): 72710804

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 33413, 66826, 133652, 167065, 334130, 668260, 3241061, 6482122, 12964244, 16205305, 32410610, 64821220]

約数ペア:

[(1, 64821220), (2, 32410610), (4, 16205305), (5, 12964244), (10, 6482122), (20, 3241061), (97, 668260), (194, 334130), (388, 167065), (485, 133652), (970, 66826), (1940, 33413)]