1639988

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1583}}^1$

素因数の和:1631

約数の個数: 24

約数和(自身を含む): 3370752

約数和(自身を除く): 1730764

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 1583, 3166, 6332, 11081, 22162, 44324, 58571, 117142, 234284, 409997, 819994, 1639988]

約数ペア:

[(1, 1639988), (2, 819994), (4, 409997), (7, 234284), (14, 117142), (28, 58571), (37, 44324), (74, 22162), (148, 11081), (259, 6332), (518, 3166), (1036, 1583)]