21772010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{449}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 20639590

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 373, 449, 746, 898, 1865, 2245, 3730, 4490, 4849, 5837, 9698, 11674, 24245, 29185, 48490, 58370, 167477, 334954, 837385, 1674770, 2177201, 4354402, 10886005, 21772010]

約数ペア:

[(1, 21772010), (2, 10886005), (5, 4354402), (10, 2177201), (13, 1674770), (26, 837385), (65, 334954), (130, 167477), (373, 58370), (449, 48490), (746, 29185), (898, 24245), (1865, 11674), (2245, 9698), (3730, 5837), (4490, 4849)]