980894920

素因数分解:

$2^3\times 5^1\times {\mathrm{1223}}^1\times {\mathrm{20051}}^1$

素因数の和:21285

約数の個数: 32

約数和(自身を含む): 2208928320

約数和(自身を除く): 1228033400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1223, 2446, 4892, 6115, 9784, 12230, 20051, 24460, 40102, 48920, 80204, 100255, 160408, 200510, 401020, 802040, 24522373, 49044746, 98089492, 122611865, 196178984, 245223730, 490447460, 980894920]

約数ペア:

[(1, 980894920), (2, 490447460), (4, 245223730), (5, 196178984), (8, 122611865), (10, 98089492), (20, 49044746), (40, 24522373), (1223, 802040), (2446, 401020), (4892, 200510), (6115, 160408), (9784, 100255), (12230, 80204), (20051, 48920), (24460, 40102)]