1640894815

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{2129}}^1$

素因数の和:2240

約数の個数: 48

約数和(自身を含む): 2415113280

約数和(自身を除く): 774218465

約数列:

[1, 5, 7, 19, 35, 61, 95, 133, 305, 361, 427, 665, 1159, 1805, 2129, 2135, 2527, 5795, 8113, 10645, 12635, 14903, 22021, 40451, 40565, 74515, 110105, 129869, 154147, 202255, 283157, 649345, 768569, 770735, 909083, 1415785, 2467511, 3842845, 4545415, 5379983, 12337555, 17272577, 26899915, 46882709, 86362885, 234413545, 328178963, 1640894815]

約数ペア:

[(1, 1640894815), (5, 328178963), (7, 234413545), (19, 86362885), (35, 46882709), (61, 26899915), (95, 17272577), (133, 12337555), (305, 5379983), (361, 4545415), (427, 3842845), (665, 2467511), (1159, 1415785), (1805, 909083), (2129, 770735), (2135, 768569), (2527, 649345), (5795, 283157), (8113, 202255), (10645, 154147), (12635, 129869), (14903, 110105), (22021, 74515), (40451, 40565)]