20977463

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 24

約数和(自身を含む): 24595200

約数和(自身を除く): 3617737

約数列:

[1, 13, 19, 47, 139, 169, 247, 611, 893, 1807, 2641, 3211, 6533, 7943, 11609, 23491, 34333, 84929, 124127, 150917, 446329, 1104077, 1613651, 20977463]

約数ペア:

[(1, 20977463), (13, 1613651), (19, 1104077), (47, 446329), (139, 150917), (169, 124127), (247, 84929), (611, 34333), (893, 23491), (1807, 11609), (2641, 7943), (3211, 6533)]