28123795

素因数分解:

$5^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{601}}^1$

素因数の和:811

約数の個数: 24

約数和(自身を含む): 39529728

約数和(自身を除く): 11405933

約数列:

[1, 5, 7, 35, 49, 191, 245, 601, 955, 1337, 3005, 4207, 6685, 9359, 21035, 29449, 46795, 114791, 147245, 573955, 803537, 4017685, 5624759, 28123795]

約数ペア:

[(1, 28123795), (5, 5624759), (7, 4017685), (35, 803537), (49, 573955), (191, 147245), (245, 114791), (601, 46795), (955, 29449), (1337, 21035), (3005, 9359), (4207, 6685)]