28001415

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{3881}}^1$

素因数の和:3939

約数の個数: 32

約数和(自身を含む): 49565376

約数和(自身を除く): 21563961

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 3881, 7215, 11643, 19405, 50453, 58215, 143597, 151359, 252265, 430791, 717985, 756795, 1866761, 2153955, 5600283, 9333805, 28001415]

約数ペア:

[(1, 28001415), (3, 9333805), (5, 5600283), (13, 2153955), (15, 1866761), (37, 756795), (39, 717985), (65, 430791), (111, 252265), (185, 151359), (195, 143597), (481, 58215), (555, 50453), (1443, 19405), (2405, 11643), (3881, 7215)]