21850475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{293}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 28800240

約数和(自身を除く): 6949765

約数列:

[1, 5, 19, 25, 95, 157, 293, 475, 785, 1465, 2983, 3925, 5567, 7325, 14915, 27835, 46001, 74575, 139175, 230005, 874019, 1150025, 4370095, 21850475]

約数ペア:

[(1, 21850475), (5, 4370095), (19, 1150025), (25, 874019), (95, 230005), (157, 139175), (293, 74575), (475, 46001), (785, 27835), (1465, 14915), (2983, 7325), (3925, 5567)]