19801899

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:356

約数の個数: 36

約数和(自身を含む): 31745376

約数和(自身を除く): 11943477

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 169, 277, 423, 507, 611, 831, 1521, 1833, 2493, 3601, 5499, 7943, 10803, 13019, 23829, 32409, 39057, 46813, 71487, 117171, 140439, 169247, 421317, 507741, 1523223, 2200211, 6600633, 19801899]

約数ペア:

[(1, 19801899), (3, 6600633), (9, 2200211), (13, 1523223), (39, 507741), (47, 421317), (117, 169247), (141, 140439), (169, 117171), (277, 71487), (423, 46813), (507, 39057), (611, 32409), (831, 23829), (1521, 13019), (1833, 10803), (2493, 7943), (3601, 5499)]