20639988

素因数分解:

$2^2\times 3^3\times {\mathrm{223}}^1\times {\mathrm{857}}^1$

素因数の和:1093

約数の個数: 48

約数和(自身を含む): 53813760

約数和(自身を除く): 33173772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 223, 446, 669, 857, 892, 1338, 1714, 2007, 2571, 2676, 3428, 4014, 5142, 6021, 7713, 8028, 10284, 12042, 15426, 23139, 24084, 30852, 46278, 92556, 191111, 382222, 573333, 764444, 1146666, 1719999, 2293332, 3439998, 5159997, 6879996, 10319994, 20639988]

約数ペア:

[(1, 20639988), (2, 10319994), (3, 6879996), (4, 5159997), (6, 3439998), (9, 2293332), (12, 1719999), (18, 1146666), (27, 764444), (36, 573333), (54, 382222), (108, 191111), (223, 92556), (446, 46278), (669, 30852), (857, 24084), (892, 23139), (1338, 15426), (1714, 12042), (2007, 10284), (2571, 8028), (2676, 7713), (3428, 6021), (4014, 5142)]