64743880

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{3863}}^1$

素因数の和:4293

約数の個数: 32

約数和(自身を含む): 146059200

約数和(自身を除く): 81315320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 3863, 4190, 7726, 8380, 15452, 16760, 19315, 30904, 38630, 77260, 154520, 1618597, 3237194, 6474388, 8092985, 12948776, 16185970, 32371940, 64743880]

約数ペア:

[(1, 64743880), (2, 32371940), (4, 16185970), (5, 12948776), (8, 8092985), (10, 6474388), (20, 3237194), (40, 1618597), (419, 154520), (838, 77260), (1676, 38630), (2095, 30904), (3352, 19315), (3863, 16760), (4190, 15452), (7726, 8380)]