19962280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2953}}^1$

素因数の和:2990

約数の個数: 48

約数和(自身を含む): 48652380

約数和(自身を除く): 28690100

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2953, 3380, 5906, 6760, 11812, 14765, 23624, 29530, 38389, 59060, 76778, 118120, 153556, 191945, 307112, 383890, 499057, 767780, 998114, 1535560, 1996228, 2495285, 3992456, 4990570, 9981140, 19962280]

約数ペア:

[(1, 19962280), (2, 9981140), (4, 4990570), (5, 3992456), (8, 2495285), (10, 1996228), (13, 1535560), (20, 998114), (26, 767780), (40, 499057), (52, 383890), (65, 307112), (104, 191945), (130, 153556), (169, 118120), (260, 76778), (338, 59060), (520, 38389), (676, 29530), (845, 23624), (1352, 14765), (1690, 11812), (2953, 6760), (3380, 5906)]