80081991

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{8009}}^1$

素因数の和:8127

約数の個数: 24

約数和(自身を含む): 127455120

約数和(自身を除く): 47373129

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 3333, 8009, 9999, 24027, 72081, 88099, 264297, 792891, 808909, 2426727, 7280181, 8897999, 26693997, 80081991]

約数ペア:

[(1, 80081991), (3, 26693997), (9, 8897999), (11, 7280181), (33, 2426727), (99, 808909), (101, 792891), (303, 264297), (909, 88099), (1111, 72081), (3333, 24027), (8009, 9999)]