77959490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 164057400

約数和(自身を除く): 86097910

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 389, 409, 490, 778, 818, 1945, 2045, 2723, 2863, 3890, 4090, 5446, 5726, 13615, 14315, 19061, 20041, 27230, 28630, 38122, 40082, 95305, 100205, 159101, 190610, 200410, 318202, 795505, 1113707, 1591010, 2227414, 5568535, 7795949, 11137070, 15591898, 38979745, 77959490]

約数ペア:

[(1, 77959490), (2, 38979745), (5, 15591898), (7, 11137070), (10, 7795949), (14, 5568535), (35, 2227414), (49, 1591010), (70, 1113707), (98, 795505), (245, 318202), (389, 200410), (409, 190610), (490, 159101), (778, 100205), (818, 95305), (1945, 40082), (2045, 38122), (2723, 28630), (2863, 27230), (3890, 20041), (4090, 19061), (5446, 14315), (5726, 13615)]