664689916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{247649}}^1$

素因数の和:247725

約数の個数: 24

約数和(自身を含む): 1289761200

約数和(自身を除く): 625071284

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 247649, 495298, 990596, 2724139, 5448278, 10896556, 15106589, 30213178, 60426356, 166172479, 332344958, 664689916]

約数ペア:

[(1, 664689916), (2, 332344958), (4, 166172479), (11, 60426356), (22, 30213178), (44, 15106589), (61, 10896556), (122, 5448278), (244, 2724139), (671, 990596), (1342, 495298), (2684, 247649)]