19901002

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 33802560

約数和(自身を除く): 13901558

約数列:

[1, 2, 11, 22, 43, 86, 109, 193, 218, 386, 473, 946, 1199, 2123, 2398, 4246, 4687, 8299, 9374, 16598, 21037, 42074, 51557, 91289, 103114, 182578, 231407, 462814, 904591, 1809182, 9950501, 19901002]

約数ペア:

[(1, 19901002), (2, 9950501), (11, 1809182), (22, 904591), (43, 462814), (86, 231407), (109, 182578), (193, 103114), (218, 91289), (386, 51557), (473, 42074), (946, 21037), (1199, 16598), (2123, 9374), (2398, 8299), (4246, 4687)]