79301380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{997}}^1$

素因数の和:1144

約数の個数: 48

約数和(自身を含む): 172526256

約数和(自身を除く): 93224876

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 388, 410, 485, 820, 970, 997, 1940, 1994, 3977, 3988, 4985, 7954, 9970, 15908, 19885, 19940, 39770, 40877, 79540, 81754, 96709, 163508, 193418, 204385, 386836, 408770, 483545, 817540, 967090, 1934180, 3965069, 7930138, 15860276, 19825345, 39650690, 79301380]

約数ペア:

[(1, 79301380), (2, 39650690), (4, 19825345), (5, 15860276), (10, 7930138), (20, 3965069), (41, 1934180), (82, 967090), (97, 817540), (164, 483545), (194, 408770), (205, 386836), (388, 204385), (410, 193418), (485, 163508), (820, 96709), (970, 81754), (997, 79540), (1940, 40877), (1994, 39770), (3977, 19940), (3988, 19885), (4985, 15908), (7954, 9970)]