64248560

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1249}}^1$

素因数の和:1905

約数の個数: 40

約数和(自身を含む): 149730000

約数和(自身を除く): 85481440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1249, 1286, 2498, 2572, 3215, 4996, 5144, 6245, 6430, 9992, 10288, 12490, 12860, 19984, 24980, 25720, 49960, 51440, 99920, 803107, 1606214, 3212428, 4015535, 6424856, 8031070, 12849712, 16062140, 32124280, 64248560]

約数ペア:

[(1, 64248560), (2, 32124280), (4, 16062140), (5, 12849712), (8, 8031070), (10, 6424856), (16, 4015535), (20, 3212428), (40, 1606214), (80, 803107), (643, 99920), (1249, 51440), (1286, 49960), (2498, 25720), (2572, 24980), (3215, 19984), (4996, 12860), (5144, 12490), (6245, 10288), (6430, 9992)]