21224805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10639}}^1$

素因数の和:10673

約数の個数: 32

約数和(自身を含む): 40857600

約数和(自身を除く): 19632795

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10639, 31917, 53195, 74473, 159585, 202141, 223419, 372365, 606423, 1010705, 1117095, 1414987, 3032115, 4244961, 7074935, 21224805]

約数ペア:

[(1, 21224805), (3, 7074935), (5, 4244961), (7, 3032115), (15, 1414987), (19, 1117095), (21, 1010705), (35, 606423), (57, 372365), (95, 223419), (105, 202141), (133, 159585), (285, 74473), (399, 53195), (665, 31917), (1995, 10639)]