28319725

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3947}}^1$

素因数の和:4005

約数の個数: 24

約数和(自身を含む): 41122368

約数和(自身を除く): 12802643

約数列:

[1, 5, 7, 25, 35, 41, 175, 205, 287, 1025, 1435, 3947, 7175, 19735, 27629, 98675, 138145, 161827, 690725, 809135, 1132789, 4045675, 5663945, 28319725]

約数ペア:

[(1, 28319725), (5, 5663945), (7, 4045675), (25, 1132789), (35, 809135), (41, 690725), (175, 161827), (205, 138145), (287, 98675), (1025, 27629), (1435, 19735), (3947, 7175)]