201221380

素因数分解:

$2^2\times 5^1\times {\mathrm{2003}}^1\times {\mathrm{5023}}^1$

素因数の和:7035

約数の個数: 24

約数和(自身を含む): 422860032

約数和(自身を除く): 221638652

約数列:

[1, 2, 4, 5, 10, 20, 2003, 4006, 5023, 8012, 10015, 10046, 20030, 20092, 25115, 40060, 50230, 100460, 10061069, 20122138, 40244276, 50305345, 100610690, 201221380]

約数ペア:

[(1, 201221380), (2, 100610690), (4, 50305345), (5, 40244276), (10, 20122138), (20, 10061069), (2003, 100460), (4006, 50230), (5023, 40060), (8012, 25115), (10015, 20092), (10046, 20030)]