221728444

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{20357}}^1$

素因数の和:20757

約数の個数: 24

約数和(自身を含む): 444618720

約数和(自身を除く): 222890276

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2723, 5446, 10892, 20357, 40714, 81428, 142499, 284998, 569996, 7918873, 15837746, 31675492, 55432111, 110864222, 221728444]

約数ペア:

[(1, 221728444), (2, 110864222), (4, 55432111), (7, 31675492), (14, 15837746), (28, 7918873), (389, 569996), (778, 284998), (1556, 142499), (2723, 81428), (5446, 40714), (10892, 20357)]