1640388939

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{68581}}^1$

素因数の和:68675

約数の個数: 32

約数和(自身を含む): 2686219776

約数和(自身を除く): 1045830837

約数列:

[1, 3, 7, 17, 21, 51, 67, 119, 201, 357, 469, 1139, 1407, 3417, 7973, 23919, 68581, 205743, 480067, 1165877, 1440201, 3497631, 4594927, 8161139, 13784781, 24483417, 32164489, 78113759, 96493467, 234341277, 546796313, 1640388939]

約数ペア:

[(1, 1640388939), (3, 546796313), (7, 234341277), (17, 96493467), (21, 78113759), (51, 32164489), (67, 24483417), (119, 13784781), (201, 8161139), (357, 4594927), (469, 3497631), (1139, 1440201), (1407, 1165877), (3417, 480067), (7973, 205743), (23919, 68581)]