21989988

素因数分解:

$2^2\times 3^3\times {\mathrm{37}}^1\times {\mathrm{5503}}^1$

素因数の和:5553

約数の個数: 48

約数和(自身を含む): 58562560

約数和(自身を除く): 36572572

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 108, 111, 148, 222, 333, 444, 666, 999, 1332, 1998, 3996, 5503, 11006, 16509, 22012, 33018, 49527, 66036, 99054, 148581, 198108, 203611, 297162, 407222, 594324, 610833, 814444, 1221666, 1832499, 2443332, 3664998, 5497497, 7329996, 10994994, 21989988]

約数ペア:

[(1, 21989988), (2, 10994994), (3, 7329996), (4, 5497497), (6, 3664998), (9, 2443332), (12, 1832499), (18, 1221666), (27, 814444), (36, 610833), (37, 594324), (54, 407222), (74, 297162), (108, 203611), (111, 198108), (148, 148581), (222, 99054), (333, 66036), (444, 49527), (666, 33018), (999, 22012), (1332, 16509), (1998, 11006), (3996, 5503)]