16216880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 40711680

約数和(自身を除く): 24494800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 47, 76, 80, 94, 95, 152, 188, 190, 227, 235, 304, 376, 380, 454, 470, 752, 760, 893, 908, 940, 1135, 1520, 1786, 1816, 1880, 2270, 3572, 3632, 3760, 4313, 4465, 4540, 7144, 8626, 8930, 9080, 10669, 14288, 17252, 17860, 18160, 21338, 21565, 34504, 35720, 42676, 43130, 53345, 69008, 71440, 85352, 86260, 106690, 170704, 172520, 202711, 213380, 345040, 405422, 426760, 810844, 853520, 1013555, 1621688, 2027110, 3243376, 4054220, 8108440, 16216880]

約数ペア:

[(1, 16216880), (2, 8108440), (4, 4054220), (5, 3243376), (8, 2027110), (10, 1621688), (16, 1013555), (19, 853520), (20, 810844), (38, 426760), (40, 405422), (47, 345040), (76, 213380), (80, 202711), (94, 172520), (95, 170704), (152, 106690), (188, 86260), (190, 85352), (227, 71440), (235, 69008), (304, 53345), (376, 43130), (380, 42676), (454, 35720), (470, 34504), (752, 21565), (760, 21338), (893, 18160), (908, 17860), (940, 17252), (1135, 14288), (1520, 10669), (1786, 9080), (1816, 8930), (1880, 8626), (2270, 7144), (3572, 4540), (3632, 4465), (3760, 4313)]