805666360

素因数分解:

$2^3\times 5^1\times {\mathrm{2389}}^1\times {\mathrm{8431}}^1$

素因数の和:10831

約数の個数: 32

約数和(自身を含む): 1813723200

約数和(自身を除く): 1008056840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2389, 4778, 8431, 9556, 11945, 16862, 19112, 23890, 33724, 42155, 47780, 67448, 84310, 95560, 168620, 337240, 20141659, 40283318, 80566636, 100708295, 161133272, 201416590, 402833180, 805666360]

約数ペア:

[(1, 805666360), (2, 402833180), (4, 201416590), (5, 161133272), (8, 100708295), (10, 80566636), (20, 40283318), (40, 20141659), (2389, 337240), (4778, 168620), (8431, 95560), (9556, 84310), (11945, 67448), (16862, 47780), (19112, 42155), (23890, 33724)]