399931490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{55469}}^1$

素因数の和:55586

約数の個数: 32

約数和(自身を含む): 830718720

約数和(自身を除く): 430787230

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 103, 206, 515, 721, 1030, 1442, 3605, 7210, 55469, 110938, 277345, 388283, 554690, 776566, 1941415, 3882830, 5713307, 11426614, 28566535, 39993149, 57133070, 79986298, 199965745, 399931490]

約数ペア:

[(1, 399931490), (2, 199965745), (5, 79986298), (7, 57133070), (10, 39993149), (14, 28566535), (35, 11426614), (70, 5713307), (103, 3882830), (206, 1941415), (515, 776566), (721, 554690), (1030, 388283), (1442, 277345), (3605, 110938), (7210, 55469)]