16981972

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 19185068

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 137, 233, 266, 274, 466, 532, 548, 932, 959, 1631, 1918, 2603, 3262, 3836, 4427, 5206, 6524, 8854, 10412, 17708, 18221, 30989, 31921, 36442, 61978, 63842, 72884, 123956, 127684, 223447, 446894, 606499, 893788, 1212998, 2425996, 4245493, 8490986, 16981972]

約数ペア:

[(1, 16981972), (2, 8490986), (4, 4245493), (7, 2425996), (14, 1212998), (19, 893788), (28, 606499), (38, 446894), (76, 223447), (133, 127684), (137, 123956), (233, 72884), (266, 63842), (274, 61978), (466, 36442), (532, 31921), (548, 30989), (932, 18221), (959, 17708), (1631, 10412), (1918, 8854), (2603, 6524), (3262, 5206), (3836, 4427)]