209428569

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{70729}}^1$

素因数の和:70789

約数の個数: 24

約数和(自身を含む): 353084160

約数和(自身を除く): 143655591

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 70729, 212187, 495103, 636561, 1485309, 3324263, 4455927, 9972789, 23269841, 29918367, 69809523, 209428569]

約数ペア:

[(1, 209428569), (3, 69809523), (7, 29918367), (9, 23269841), (21, 9972789), (47, 4455927), (63, 3324263), (141, 1485309), (329, 636561), (423, 495103), (987, 212187), (2961, 70729)]