28812880

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 69995520

約数和(自身を除く): 41182640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 79, 80, 94, 97, 158, 188, 194, 235, 316, 376, 388, 395, 470, 485, 632, 752, 776, 790, 940, 970, 1264, 1552, 1580, 1880, 1940, 3160, 3713, 3760, 3880, 4559, 6320, 7426, 7663, 7760, 9118, 14852, 15326, 18236, 18565, 22795, 29704, 30652, 36472, 37130, 38315, 45590, 59408, 61304, 72944, 74260, 76630, 91180, 122608, 148520, 153260, 182360, 297040, 306520, 360161, 364720, 613040, 720322, 1440644, 1800805, 2881288, 3601610, 5762576, 7203220, 14406440, 28812880]

約数ペア:

[(1, 28812880), (2, 14406440), (4, 7203220), (5, 5762576), (8, 3601610), (10, 2881288), (16, 1800805), (20, 1440644), (40, 720322), (47, 613040), (79, 364720), (80, 360161), (94, 306520), (97, 297040), (158, 182360), (188, 153260), (194, 148520), (235, 122608), (316, 91180), (376, 76630), (388, 74260), (395, 72944), (470, 61304), (485, 59408), (632, 45590), (752, 38315), (776, 37130), (790, 36472), (940, 30652), (970, 29704), (1264, 22795), (1552, 18565), (1580, 18236), (1880, 15326), (1940, 14852), (3160, 9118), (3713, 7760), (3760, 7663), (3880, 7426), (4559, 6320)]