19905158

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 37946880

約数和(自身を除く): 18041722

約数列:

[1, 2, 7, 13, 14, 26, 47, 91, 94, 169, 179, 182, 329, 338, 358, 611, 658, 1183, 1222, 1253, 2327, 2366, 2506, 4277, 4654, 7943, 8413, 8554, 15886, 16289, 16826, 30251, 32578, 55601, 58891, 60502, 109369, 111202, 117782, 211757, 218738, 423514, 765583, 1421797, 1531166, 2843594, 9952579, 19905158]

約数ペア:

[(1, 19905158), (2, 9952579), (7, 2843594), (13, 1531166), (14, 1421797), (26, 765583), (47, 423514), (91, 218738), (94, 211757), (169, 117782), (179, 111202), (182, 109369), (329, 60502), (338, 58891), (358, 55601), (611, 32578), (658, 30251), (1183, 16826), (1222, 16289), (1253, 15886), (2327, 8554), (2366, 8413), (2506, 7943), (4277, 4654)]