253494920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{905339}}^1$

素因数の和:905357

約数の個数: 32

約数和(自身を含む): 651844800

約数和(自身を除く): 398349880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 905339, 1810678, 3621356, 4526695, 6337373, 7242712, 9053390, 12674746, 18106780, 25349492, 31686865, 36213560, 50698984, 63373730, 126747460, 253494920]

約数ペア:

[(1, 253494920), (2, 126747460), (4, 63373730), (5, 50698984), (7, 36213560), (8, 31686865), (10, 25349492), (14, 18106780), (20, 12674746), (28, 9053390), (35, 7242712), (40, 6337373), (56, 4526695), (70, 3621356), (140, 1810678), (280, 905339)]