21155960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75557}}^1$

素因数の和:75575

約数の個数: 32

約数和(自身を含む): 54401760

約数和(自身を除く): 33245800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75557, 151114, 302228, 377785, 528899, 604456, 755570, 1057798, 1511140, 2115596, 2644495, 3022280, 4231192, 5288990, 10577980, 21155960]

約数ペア:

[(1, 21155960), (2, 10577980), (4, 5288990), (5, 4231192), (7, 3022280), (8, 2644495), (10, 2115596), (14, 1511140), (20, 1057798), (28, 755570), (35, 604456), (40, 528899), (56, 377785), (70, 302228), (140, 151114), (280, 75557)]