18997628

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{157}}^1\times {\mathrm{179}}^1$

素因数の和:366

約数の個数: 36

約数和(自身を含む): 36431640

約数和(自身を除く): 17434012

約数列:

[1, 2, 4, 13, 26, 52, 157, 169, 179, 314, 338, 358, 628, 676, 716, 2041, 2327, 4082, 4654, 8164, 9308, 26533, 28103, 30251, 53066, 56206, 60502, 106132, 112412, 121004, 365339, 730678, 1461356, 4749407, 9498814, 18997628]

約数ペア:

[(1, 18997628), (2, 9498814), (4, 4749407), (13, 1461356), (26, 730678), (52, 365339), (157, 121004), (169, 112412), (179, 106132), (314, 60502), (338, 56206), (358, 53066), (628, 30251), (676, 28103), (716, 26533), (2041, 9308), (2327, 8164), (4082, 4654)]