681309505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{829}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 886838400

約数和(自身を除く): 205528895

約数列:

[1, 5, 19, 41, 95, 205, 211, 779, 829, 1055, 3895, 4009, 4145, 8651, 15751, 20045, 33989, 43255, 78755, 164369, 169945, 174919, 645791, 821845, 874595, 3228955, 3323461, 7171679, 16617305, 35858395, 136261901, 681309505]

約数ペア:

[(1, 681309505), (5, 136261901), (19, 35858395), (41, 16617305), (95, 7171679), (205, 3323461), (211, 3228955), (779, 874595), (829, 821845), (1055, 645791), (3895, 174919), (4009, 169945), (4145, 164369), (8651, 78755), (15751, 43255), (20045, 33989)]