201657980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1\times {\mathrm{587}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 431192160

約数和(自身を除く): 229534180

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 193, 356, 386, 445, 587, 772, 890, 965, 1174, 1780, 1930, 2348, 2935, 3860, 5870, 11740, 17177, 34354, 52243, 68708, 85885, 104486, 113291, 171770, 208972, 226582, 261215, 343540, 453164, 522430, 566455, 1044860, 1132910, 2265820, 10082899, 20165798, 40331596, 50414495, 100828990, 201657980]

約数ペア:

[(1, 201657980), (2, 100828990), (4, 50414495), (5, 40331596), (10, 20165798), (20, 10082899), (89, 2265820), (178, 1132910), (193, 1044860), (356, 566455), (386, 522430), (445, 453164), (587, 343540), (772, 261215), (890, 226582), (965, 208972), (1174, 171770), (1780, 113291), (1930, 104486), (2348, 85885), (2935, 68708), (3860, 52243), (5870, 34354), (11740, 17177)]