20833328

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 41836608

約数和(自身を除く): 21003280

約数列:

[1, 2, 4, 8, 16, 43, 86, 107, 172, 214, 283, 344, 428, 566, 688, 856, 1132, 1712, 2264, 4528, 4601, 9202, 12169, 18404, 24338, 30281, 36808, 48676, 60562, 73616, 97352, 121124, 194704, 242248, 484496, 1302083, 2604166, 5208332, 10416664, 20833328]

約数ペア:

[(1, 20833328), (2, 10416664), (4, 5208332), (8, 2604166), (16, 1302083), (43, 484496), (86, 242248), (107, 194704), (172, 121124), (214, 97352), (283, 73616), (344, 60562), (428, 48676), (566, 36808), (688, 30281), (856, 24338), (1132, 18404), (1712, 12169), (2264, 9202), (4528, 4601)]