218503880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{780371}}^1$

素因数の和:780389

約数の個数: 32

約数和(自身を含む): 561867840

約数和(自身を除く): 343363960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 780371, 1560742, 3121484, 3901855, 5462597, 6242968, 7803710, 10925194, 15607420, 21850388, 27312985, 31214840, 43700776, 54625970, 109251940, 218503880]

約数ペア:

[(1, 218503880), (2, 109251940), (4, 54625970), (5, 43700776), (7, 31214840), (8, 27312985), (10, 21850388), (14, 15607420), (20, 10925194), (28, 7803710), (35, 6242968), (40, 5462597), (56, 3901855), (70, 3121484), (140, 1560742), (280, 780371)]