20439520

素因数分解:

$2^5\times 5^1\times {\mathrm{127747}}^1$

素因数の和:127762

約数の個数: 24

約数和(自身を含む): 48288744

約数和(自身を除く): 27849224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 127747, 255494, 510988, 638735, 1021976, 1277470, 2043952, 2554940, 4087904, 5109880, 10219760, 20439520]

約数ペア:

[(1, 20439520), (2, 10219760), (4, 5109880), (5, 4087904), (8, 2554940), (10, 2043952), (16, 1277470), (20, 1021976), (32, 638735), (40, 510988), (80, 255494), (160, 127747)]