21870850

素因数分解:

$2^1\times 5^2\times {\mathrm{109}}^1\times {\mathrm{4013}}^1$

素因数の和:4134

約数の個数: 24

約数和(自身を含む): 41063220

約数和(自身を除く): 19192370

約数列:

[1, 2, 5, 10, 25, 50, 109, 218, 545, 1090, 2725, 4013, 5450, 8026, 20065, 40130, 100325, 200650, 437417, 874834, 2187085, 4374170, 10935425, 21870850]

約数ペア:

[(1, 21870850), (2, 10935425), (5, 4374170), (10, 2187085), (25, 874834), (50, 437417), (109, 200650), (218, 100325), (545, 40130), (1090, 20065), (2725, 8026), (4013, 5450)]