19915560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1129}}^1$

素因数の和:1160

約数の個数: 144

約数和(自身を含む): 75359700

約数和(自身を除く): 55444140

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1129, 1176, 1260, 1470, 1764, 1960, 2205, 2258, 2520, 2940, 3387, 3528, 4410, 4516, 5645, 5880, 6774, 7903, 8820, 9032, 10161, 11290, 13548, 15806, 16935, 17640, 20322, 22580, 23709, 27096, 31612, 33870, 39515, 40644, 45160, 47418, 50805, 55321, 63224, 67740, 71127, 79030, 81288, 94836, 101610, 110642, 118545, 135480, 142254, 158060, 165963, 189672, 203220, 221284, 237090, 276605, 284508, 316120, 331926, 355635, 406440, 442568, 474180, 497889, 553210, 569016, 663852, 711270, 829815, 948360, 995778, 1106420, 1327704, 1422540, 1659630, 1991556, 2212840, 2489445, 2845080, 3319260, 3983112, 4978890, 6638520, 9957780, 19915560]

約数ペア:

[(1, 19915560), (2, 9957780), (3, 6638520), (4, 4978890), (5, 3983112), (6, 3319260), (7, 2845080), (8, 2489445), (9, 2212840), (10, 1991556), (12, 1659630), (14, 1422540), (15, 1327704), (18, 1106420), (20, 995778), (21, 948360), (24, 829815), (28, 711270), (30, 663852), (35, 569016), (36, 553210), (40, 497889), (42, 474180), (45, 442568), (49, 406440), (56, 355635), (60, 331926), (63, 316120), (70, 284508), (72, 276605), (84, 237090), (90, 221284), (98, 203220), (105, 189672), (120, 165963), (126, 158060), (140, 142254), (147, 135480), (168, 118545), (180, 110642), (196, 101610), (210, 94836), (245, 81288), (252, 79030), (280, 71127), (294, 67740), (315, 63224), (360, 55321), (392, 50805), (420, 47418), (441, 45160), (490, 40644), (504, 39515), (588, 33870), (630, 31612), (735, 27096), (840, 23709), (882, 22580), (980, 20322), (1129, 17640), (1176, 16935), (1260, 15806), (1470, 13548), (1764, 11290), (1960, 10161), (2205, 9032), (2258, 8820), (2520, 7903), (2940, 6774), (3387, 5880), (3528, 5645), (4410, 4516)]