28039880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{63727}}^1$

素因数の和:63749

約数の個数: 32

約数和(自身を含む): 68826240

約数和(自身を除く): 40786360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 63727, 127454, 254908, 318635, 509816, 637270, 700997, 1274540, 1401994, 2549080, 2803988, 3504985, 5607976, 7009970, 14019940, 28039880]

約数ペア:

[(1, 28039880), (2, 14019940), (4, 7009970), (5, 5607976), (8, 3504985), (10, 2803988), (11, 2549080), (20, 1401994), (22, 1274540), (40, 700997), (44, 637270), (55, 509816), (88, 318635), (110, 254908), (220, 127454), (440, 63727)]