18090900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{20101}}^1$

素因数の和:20121

約数の個数: 54

約数和(自身を含む): 56707742

約数和(自身を除く): 38616842

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 20101, 40202, 60303, 80404, 100505, 120606, 180909, 201010, 241212, 301515, 361818, 402020, 502525, 603030, 723636, 904545, 1005050, 1206060, 1507575, 1809090, 2010100, 3015150, 3618180, 4522725, 6030300, 9045450, 18090900]

約数ペア:

[(1, 18090900), (2, 9045450), (3, 6030300), (4, 4522725), (5, 3618180), (6, 3015150), (9, 2010100), (10, 1809090), (12, 1507575), (15, 1206060), (18, 1005050), (20, 904545), (25, 723636), (30, 603030), (36, 502525), (45, 402020), (50, 361818), (60, 301515), (75, 241212), (90, 201010), (100, 180909), (150, 120606), (180, 100505), (225, 80404), (300, 60303), (450, 40202), (900, 20101)]