1978865

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 2844072

約数和(自身を除く): 865207

約数列:

[1, 5, 7, 35, 41, 49, 197, 205, 245, 287, 985, 1379, 1435, 2009, 6895, 8077, 9653, 10045, 40385, 48265, 56539, 282695, 395773, 1978865]

約数ペア:

[(1, 1978865), (5, 395773), (7, 282695), (35, 56539), (41, 48265), (49, 40385), (197, 10045), (205, 9653), (245, 8077), (287, 6895), (985, 2009), (1379, 1435)]