644807787

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1\times {\mathrm{809}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 940584960

約数和(自身を除く): 295777173

約数列:

[1, 3, 13, 39, 107, 191, 321, 573, 809, 1391, 2427, 2483, 4173, 7449, 10517, 20437, 31551, 61311, 86563, 154519, 259689, 265681, 463557, 797043, 1125319, 2008747, 3375957, 6026241, 16533533, 49600599, 214935929, 644807787]

約数ペア:

[(1, 644807787), (3, 214935929), (13, 49600599), (39, 16533533), (107, 6026241), (191, 3375957), (321, 2008747), (573, 1125319), (809, 797043), (1391, 463557), (2427, 265681), (2483, 259689), (4173, 154519), (7449, 86563), (10517, 61311), (20437, 31551)]