20109780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{111721}}^1$

素因数の和:111736

約数の個数: 36

約数和(自身を含む): 61000212

約数和(自身を除く): 40890432

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 111721, 223442, 335163, 446884, 558605, 670326, 1005489, 1117210, 1340652, 1675815, 2010978, 2234420, 3351630, 4021956, 5027445, 6703260, 10054890, 20109780]

約数ペア:

[(1, 20109780), (2, 10054890), (3, 6703260), (4, 5027445), (5, 4021956), (6, 3351630), (9, 2234420), (10, 2010978), (12, 1675815), (15, 1340652), (18, 1117210), (20, 1005489), (30, 670326), (36, 558605), (45, 446884), (60, 335163), (90, 223442), (180, 111721)]