21122990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{809}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 43623360

約数和(自身を除く): 22500370

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 373, 746, 809, 1618, 1865, 2611, 3730, 4045, 5222, 5663, 8090, 11326, 13055, 26110, 28315, 56630, 301757, 603514, 1508785, 2112299, 3017570, 4224598, 10561495, 21122990]

約数ペア:

[(1, 21122990), (2, 10561495), (5, 4224598), (7, 3017570), (10, 2112299), (14, 1508785), (35, 603514), (70, 301757), (373, 56630), (746, 28315), (809, 26110), (1618, 13055), (1865, 11326), (2611, 8090), (3730, 5663), (4045, 5222)]