640229817

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{197419}}^1$

素因数の和:197492

約数の個数: 16

約数和(自身を含む): 909711360

約数和(自身を除く): 269481543

約数列:

[1, 3, 23, 47, 69, 141, 1081, 3243, 197419, 592257, 4540637, 9278693, 13621911, 27836079, 213409939, 640229817]

約数ペア:

[(1, 640229817), (3, 213409939), (23, 27836079), (47, 13621911), (69, 9278693), (141, 4540637), (1081, 592257), (3243, 197419)]