21384585

素因数分解:

$3^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2131}}^1$

素因数の和:2365

約数の個数: 24

約数和(自身を含む): 37250304

約数和(自身を除く): 15865719

約数列:

[1, 3, 5, 9, 15, 45, 223, 669, 1115, 2007, 2131, 3345, 6393, 10035, 10655, 19179, 31965, 95895, 475213, 1425639, 2376065, 4276917, 7128195, 21384585]

約数ペア:

[(1, 21384585), (3, 7128195), (5, 4276917), (9, 2376065), (15, 1425639), (45, 475213), (223, 95895), (669, 31965), (1115, 19179), (2007, 10655), (2131, 10035), (3345, 6393)]