19890180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110501}}^1$

素因数の和:110516

約数の個数: 36

約数和(自身を含む): 60334092

約数和(自身を除く): 40443912

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110501, 221002, 331503, 442004, 552505, 663006, 994509, 1105010, 1326012, 1657515, 1989018, 2210020, 3315030, 3978036, 4972545, 6630060, 9945090, 19890180]

約数ペア:

[(1, 19890180), (2, 9945090), (3, 6630060), (4, 4972545), (5, 3978036), (6, 3315030), (9, 2210020), (10, 1989018), (12, 1657515), (15, 1326012), (18, 1105010), (20, 994509), (30, 663006), (36, 552505), (45, 442004), (60, 331503), (90, 221002), (180, 110501)]