21970707

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 34206720

約数和(自身を除く): 12236013

約数列:

[1, 3, 11, 19, 33, 57, 67, 201, 209, 523, 627, 737, 1273, 1569, 2211, 3819, 5753, 9937, 14003, 17259, 29811, 35041, 42009, 105123, 109307, 327921, 385451, 665779, 1156353, 1997337, 7323569, 21970707]

約数ペア:

[(1, 21970707), (3, 7323569), (11, 1997337), (19, 1156353), (33, 665779), (57, 385451), (67, 327921), (201, 109307), (209, 105123), (523, 42009), (627, 35041), (737, 29811), (1273, 17259), (1569, 14003), (2211, 9937), (3819, 5753)]