213950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:412

約数の個数: 24

約数和(自身を含む): 435240

約数和(自身を除く): 221290

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 275, 389, 550, 778, 1945, 3890, 4279, 8558, 9725, 19450, 21395, 42790, 106975, 213950]

約数ペア:

[(1, 213950), (2, 106975), (5, 42790), (10, 21395), (11, 19450), (22, 9725), (25, 8558), (50, 4279), (55, 3890), (110, 1945), (275, 778), (389, 550)]