21103208

素因数分解:

$2^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1973}}^1$

素因数の和:2177

約数の個数: 32

約数和(自身を含む): 45480960

約数和(自身を除く): 24377752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 191, 382, 764, 1337, 1528, 1973, 2674, 3946, 5348, 7892, 10696, 13811, 15784, 27622, 55244, 110488, 376843, 753686, 1507372, 2637901, 3014744, 5275802, 10551604, 21103208]

約数ペア:

[(1, 21103208), (2, 10551604), (4, 5275802), (7, 3014744), (8, 2637901), (14, 1507372), (28, 753686), (56, 376843), (191, 110488), (382, 55244), (764, 27622), (1337, 15784), (1528, 13811), (1973, 10696), (2674, 7892), (3946, 5348)]