20971837100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{234847}}^1$

素因数の和:234927

約数の個数: 72

約数和(自身を含む): 48923535360

約数和(自身を除く): 27951698260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 47, 50, 76, 94, 95, 100, 188, 190, 235, 380, 470, 475, 893, 940, 950, 1175, 1786, 1900, 2350, 3572, 4465, 4700, 8930, 17860, 22325, 44650, 89300, 234847, 469694, 939388, 1174235, 2348470, 4462093, 4696940, 5871175, 8924186, 11037809, 11742350, 17848372, 22075618, 22310465, 23484700, 44151236, 44620930, 55189045, 89241860, 110378090, 111552325, 209718371, 220756180, 223104650, 275945225, 419436742, 446209300, 551890450, 838873484, 1048591855, 1103780900, 2097183710, 4194367420, 5242959275, 10485918550, 20971837100]

約数ペア:

[(1, 20971837100), (2, 10485918550), (4, 5242959275), (5, 4194367420), (10, 2097183710), (19, 1103780900), (20, 1048591855), (25, 838873484), (38, 551890450), (47, 446209300), (50, 419436742), (76, 275945225), (94, 223104650), (95, 220756180), (100, 209718371), (188, 111552325), (190, 110378090), (235, 89241860), (380, 55189045), (470, 44620930), (475, 44151236), (893, 23484700), (940, 22310465), (950, 22075618), (1175, 17848372), (1786, 11742350), (1900, 11037809), (2350, 8924186), (3572, 5871175), (4465, 4696940), (4700, 4462093), (8930, 2348470), (17860, 1174235), (22325, 939388), (44650, 469694), (89300, 234847)]