81890100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{90989}}^1$

素因数の和:91009

約数の個数: 54

約数和(自身を含む): 256682790

約数和(自身を除く): 174792690

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, 90989, 181978, 272967, 363956, 454945, 545934, 818901, 909890, 1091868, 1364835, 1637802, 1819780, 2274725, 2729670, 3275604, 4094505, 4549450, 5459340, 6824175, 8189010, 9098900, 13648350, 16378020, 20472525, 27296700, 40945050, 81890100]

約数ペア:

[(1, 81890100), (2, 40945050), (3, 27296700), (4, 20472525), (5, 16378020), (6, 13648350), (9, 9098900), (10, 8189010), (12, 6824175), (15, 5459340), (18, 4549450), (20, 4094505), (25, 3275604), (30, 2729670), (36, 2274725), (45, 1819780), (50, 1637802), (60, 1364835), (75, 1091868), (90, 909890), (100, 818901), (150, 545934), (180, 454945), (225, 363956), (300, 272967), (450, 181978), (900, 90989)]