25700020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{11789}}^1$

素因数の和:11907

約数の個数: 24

約数和(自身を含む): 54469800

約数和(自身を除く): 28769780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 11789, 23578, 47156, 58945, 117890, 235780, 1285001, 2570002, 5140004, 6425005, 12850010, 25700020]

約数ペア:

[(1, 25700020), (2, 12850010), (4, 6425005), (5, 5140004), (10, 2570002), (20, 1285001), (109, 235780), (218, 117890), (436, 58945), (545, 47156), (1090, 23578), (2180, 11789)]