72001620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{400009}}^1$

素因数の和:400024

約数の個数: 36

約数和(自身を含む): 218405460

約数和(自身を除く): 146403840

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 400009, 800018, 1200027, 1600036, 2000045, 2400054, 3600081, 4000090, 4800108, 6000135, 7200162, 8000180, 12000270, 14400324, 18000405, 24000540, 36000810, 72001620]

約数ペア:

[(1, 72001620), (2, 36000810), (3, 24000540), (4, 18000405), (5, 14400324), (6, 12000270), (9, 8000180), (10, 7200162), (12, 6000135), (15, 4800108), (18, 4000090), (20, 3600081), (30, 2400054), (36, 2000045), (45, 1600036), (60, 1200027), (90, 800018), (180, 400009)]