21094520

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3359}}^1$

素因数の和:3527

約数の個数: 32

約数和(自身を含む): 47779200

約数和(自身を除く): 26684680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 3359, 6280, 6718, 13436, 16795, 26872, 33590, 67180, 134360, 527363, 1054726, 2109452, 2636815, 4218904, 5273630, 10547260, 21094520]

約数ペア:

[(1, 21094520), (2, 10547260), (4, 5273630), (5, 4218904), (8, 2636815), (10, 2109452), (20, 1054726), (40, 527363), (157, 134360), (314, 67180), (628, 33590), (785, 26872), (1256, 16795), (1570, 13436), (3140, 6718), (3359, 6280)]