21401556

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2221}}^1$

素因数の和:2312

約数の個数: 48

約数和(自身を含む): 55247808

約数和(自身を除く): 33846252

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 73, 132, 146, 219, 292, 438, 803, 876, 1606, 2221, 2409, 3212, 4442, 4818, 6663, 8884, 9636, 13326, 24431, 26652, 48862, 73293, 97724, 146586, 162133, 293172, 324266, 486399, 648532, 972798, 1783463, 1945596, 3566926, 5350389, 7133852, 10700778, 21401556]

約数ペア:

[(1, 21401556), (2, 10700778), (3, 7133852), (4, 5350389), (6, 3566926), (11, 1945596), (12, 1783463), (22, 972798), (33, 648532), (44, 486399), (66, 324266), (73, 293172), (132, 162133), (146, 146586), (219, 97724), (292, 73293), (438, 48862), (803, 26652), (876, 24431), (1606, 13326), (2221, 9636), (2409, 8884), (3212, 6663), (4442, 4818)]