801640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{409}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 2103300

約数和(自身を除く): 1301660

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 409, 490, 818, 980, 1636, 1960, 2045, 2863, 3272, 4090, 5726, 8180, 11452, 14315, 16360, 20041, 22904, 28630, 40082, 57260, 80164, 100205, 114520, 160328, 200410, 400820, 801640]

約数ペア:

[(1, 801640), (2, 400820), (4, 200410), (5, 160328), (7, 114520), (8, 100205), (10, 80164), (14, 57260), (20, 40082), (28, 28630), (35, 22904), (40, 20041), (49, 16360), (56, 14315), (70, 11452), (98, 8180), (140, 5726), (196, 4090), (245, 3272), (280, 2863), (392, 2045), (409, 1960), (490, 1636), (818, 980)]