21511150

素因数分解:

$2^1\times 5^2\times {\mathrm{109}}^1\times {\mathrm{3947}}^1$

素因数の和:4068

約数の個数: 24

約数和(自身を含む): 40388040

約数和(自身を除く): 18876890

約数列:

[1, 2, 5, 10, 25, 50, 109, 218, 545, 1090, 2725, 3947, 5450, 7894, 19735, 39470, 98675, 197350, 430223, 860446, 2151115, 4302230, 10755575, 21511150]

約数ペア:

[(1, 21511150), (2, 10755575), (5, 4302230), (10, 2151115), (25, 860446), (50, 430223), (109, 197350), (218, 98675), (545, 39470), (1090, 19735), (2725, 7894), (3947, 5450)]