20991532

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{1567}}^1$

素因数の和:1785

約数の個数: 24

約数和(自身を含む): 39118464

約数和(自身を除く): 18126932

約数列:

[1, 2, 4, 17, 34, 68, 197, 394, 788, 1567, 3134, 3349, 6268, 6698, 13396, 26639, 53278, 106556, 308699, 617398, 1234796, 5247883, 10495766, 20991532]

約数ペア:

[(1, 20991532), (2, 10495766), (4, 5247883), (17, 1234796), (34, 617398), (68, 308699), (197, 106556), (394, 53278), (788, 26639), (1567, 13396), (3134, 6698), (3349, 6268)]