21489748

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20743}}^1$

素因数の和:20791

約数の個数: 24

約数和(自身を含む): 44143232

約数和(自身を除く): 22653484

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20743, 41486, 82972, 145201, 290402, 580804, 767491, 1534982, 3069964, 5372437, 10744874, 21489748]

約数ペア:

[(1, 21489748), (2, 10744874), (4, 5372437), (7, 3069964), (14, 1534982), (28, 767491), (37, 580804), (74, 290402), (148, 145201), (259, 82972), (518, 41486), (1036, 20743)]