28254520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 78796800

約数和(自身を除く): 50542280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 47, 56, 70, 76, 94, 95, 113, 133, 140, 152, 188, 190, 226, 235, 266, 280, 329, 376, 380, 452, 470, 532, 565, 658, 665, 760, 791, 893, 904, 940, 1064, 1130, 1316, 1330, 1582, 1645, 1786, 1880, 2147, 2260, 2632, 2660, 3164, 3290, 3572, 3955, 4294, 4465, 4520, 5311, 5320, 6251, 6328, 6580, 7144, 7910, 8588, 8930, 10622, 10735, 12502, 13160, 15029, 15820, 17176, 17860, 21244, 21470, 25004, 26555, 30058, 31255, 31640, 35720, 37177, 42488, 42940, 50008, 53110, 60116, 62510, 74354, 75145, 85880, 100909, 106220, 120232, 125020, 148708, 150290, 185885, 201818, 212440, 250040, 297416, 300580, 371770, 403636, 504545, 601160, 706363, 743540, 807272, 1009090, 1412726, 1487080, 2018180, 2825452, 3531815, 4036360, 5650904, 7063630, 14127260, 28254520]

約数ペア:

[(1, 28254520), (2, 14127260), (4, 7063630), (5, 5650904), (7, 4036360), (8, 3531815), (10, 2825452), (14, 2018180), (19, 1487080), (20, 1412726), (28, 1009090), (35, 807272), (38, 743540), (40, 706363), (47, 601160), (56, 504545), (70, 403636), (76, 371770), (94, 300580), (95, 297416), (113, 250040), (133, 212440), (140, 201818), (152, 185885), (188, 150290), (190, 148708), (226, 125020), (235, 120232), (266, 106220), (280, 100909), (329, 85880), (376, 75145), (380, 74354), (452, 62510), (470, 60116), (532, 53110), (565, 50008), (658, 42940), (665, 42488), (760, 37177), (791, 35720), (893, 31640), (904, 31255), (940, 30058), (1064, 26555), (1130, 25004), (1316, 21470), (1330, 21244), (1582, 17860), (1645, 17176), (1786, 15820), (1880, 15029), (2147, 13160), (2260, 12502), (2632, 10735), (2660, 10622), (3164, 8930), (3290, 8588), (3572, 7910), (3955, 7144), (4294, 6580), (4465, 6328), (4520, 6251), (5311, 5320)]