20218179920

素因数分解:

$2^4\times 5^1\times {\mathrm{859}}^1\times {\mathrm{294211}}^1$

素因数の和:295083

約数の個数: 40

約数和(自身を含む): 47062151520

約数和(自身を除く): 26843971600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 859, 1718, 3436, 4295, 6872, 8590, 13744, 17180, 34360, 68720, 294211, 588422, 1176844, 1471055, 2353688, 2942110, 4707376, 5884220, 11768440, 23536880, 252727249, 505454498, 1010908996, 1263636245, 2021817992, 2527272490, 4043635984, 5054544980, 10109089960, 20218179920]

約数ペア:

[(1, 20218179920), (2, 10109089960), (4, 5054544980), (5, 4043635984), (8, 2527272490), (10, 2021817992), (16, 1263636245), (20, 1010908996), (40, 505454498), (80, 252727249), (859, 23536880), (1718, 11768440), (3436, 5884220), (4295, 4707376), (6872, 2942110), (8590, 2353688), (13744, 1471055), (17180, 1176844), (34360, 588422), (68720, 294211)]