19869999

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 29213184

約数和(自身を除く): 9343185

約数列:

[1, 3, 23, 37, 43, 69, 111, 129, 181, 543, 851, 989, 1591, 2553, 2967, 4163, 4773, 6697, 7783, 12489, 20091, 23349, 36593, 109779, 154031, 179009, 287971, 462093, 537027, 863913, 6623333, 19869999]

約数ペア:

[(1, 19869999), (3, 6623333), (23, 863913), (37, 537027), (43, 462093), (69, 287971), (111, 179009), (129, 154031), (181, 109779), (543, 36593), (851, 23349), (989, 20091), (1591, 12489), (2553, 7783), (2967, 6697), (4163, 4773)]