21473420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56509}}^1$

素因数の和:56537

約数の個数: 24

約数和(自身を含む): 47468400

約数和(自身を除く): 25994980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56509, 113018, 226036, 282545, 565090, 1073671, 1130180, 2147342, 4294684, 5368355, 10736710, 21473420]

約数ペア:

[(1, 21473420), (2, 10736710), (4, 5368355), (5, 4294684), (10, 2147342), (19, 1130180), (20, 1073671), (38, 565090), (76, 282545), (95, 226036), (190, 113018), (380, 56509)]