18245864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 42819840

約数和(自身を除く): 24573976

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 71, 91, 104, 142, 182, 284, 353, 364, 497, 568, 706, 728, 923, 994, 1412, 1846, 1988, 2471, 2824, 3692, 3976, 4589, 4942, 6461, 7384, 9178, 9884, 12922, 18356, 19768, 25063, 25844, 32123, 36712, 50126, 51688, 64246, 100252, 128492, 175441, 200504, 256984, 325819, 350882, 651638, 701764, 1303276, 1403528, 2280733, 2606552, 4561466, 9122932, 18245864]

約数ペア:

[(1, 18245864), (2, 9122932), (4, 4561466), (7, 2606552), (8, 2280733), (13, 1403528), (14, 1303276), (26, 701764), (28, 651638), (52, 350882), (56, 325819), (71, 256984), (91, 200504), (104, 175441), (142, 128492), (182, 100252), (284, 64246), (353, 51688), (364, 50126), (497, 36712), (568, 32123), (706, 25844), (728, 25063), (923, 19768), (994, 18356), (1412, 12922), (1846, 9884), (1988, 9178), (2471, 7384), (2824, 6461), (3692, 4942), (3976, 4589)]