19891734

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 25105386

約数列:

[1, 2, 3, 6, 17, 23, 34, 46, 51, 61, 69, 102, 122, 138, 139, 183, 278, 366, 391, 417, 782, 834, 1037, 1173, 1403, 2074, 2346, 2363, 2806, 3111, 3197, 4209, 4726, 6222, 6394, 7089, 8418, 8479, 9591, 14178, 16958, 19182, 23851, 25437, 47702, 50874, 54349, 71553, 108698, 143106, 144143, 163047, 195017, 288286, 326094, 390034, 432429, 585051, 864858, 1170102, 3315289, 6630578, 9945867, 19891734]

約数ペア:

[(1, 19891734), (2, 9945867), (3, 6630578), (6, 3315289), (17, 1170102), (23, 864858), (34, 585051), (46, 432429), (51, 390034), (61, 326094), (69, 288286), (102, 195017), (122, 163047), (138, 144143), (139, 143106), (183, 108698), (278, 71553), (366, 54349), (391, 50874), (417, 47702), (782, 25437), (834, 23851), (1037, 19182), (1173, 16958), (1403, 14178), (2074, 9591), (2346, 8479), (2363, 8418), (2806, 7089), (3111, 6394), (3197, 6222), (4209, 4726)]