18989516

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4013}}^1$

素因数の和:4050

約数の個数: 36

約数和(自身を含む): 41135472

約数和(自身を除く): 22145956

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4013, 4732, 8026, 16052, 28091, 52169, 56182, 104338, 112364, 208676, 365183, 678197, 730366, 1356394, 1460732, 2712788, 4747379, 9494758, 18989516]

約数ペア:

[(1, 18989516), (2, 9494758), (4, 4747379), (7, 2712788), (13, 1460732), (14, 1356394), (26, 730366), (28, 678197), (52, 365183), (91, 208676), (169, 112364), (182, 104338), (338, 56182), (364, 52169), (676, 28091), (1183, 16052), (2366, 8026), (4013, 4732)]