19872720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{3943}}^1$

素因数の和:3969

約数の個数: 120

約数和(自身を含む): 76292736

約数和(自身を除く): 56420016

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 3943, 5040, 7886, 11829, 15772, 19715, 23658, 27601, 31544, 35487, 39430, 47316, 55202, 59145, 63088, 70974, 78860, 82803, 94632, 110404, 118290, 138005, 141948, 157720, 165606, 177435, 189264, 220808, 236580, 248409, 276010, 283896, 315440, 331212, 354870, 414015, 441616, 473160, 496818, 552020, 567792, 662424, 709740, 828030, 946320, 993636, 1104040, 1242045, 1324848, 1419480, 1656060, 1987272, 2208080, 2484090, 2838960, 3312120, 3974544, 4968180, 6624240, 9936360, 19872720]

約数ペア:

[(1, 19872720), (2, 9936360), (3, 6624240), (4, 4968180), (5, 3974544), (6, 3312120), (7, 2838960), (8, 2484090), (9, 2208080), (10, 1987272), (12, 1656060), (14, 1419480), (15, 1324848), (16, 1242045), (18, 1104040), (20, 993636), (21, 946320), (24, 828030), (28, 709740), (30, 662424), (35, 567792), (36, 552020), (40, 496818), (42, 473160), (45, 441616), (48, 414015), (56, 354870), (60, 331212), (63, 315440), (70, 283896), (72, 276010), (80, 248409), (84, 236580), (90, 220808), (105, 189264), (112, 177435), (120, 165606), (126, 157720), (140, 141948), (144, 138005), (168, 118290), (180, 110404), (210, 94632), (240, 82803), (252, 78860), (280, 70974), (315, 63088), (336, 59145), (360, 55202), (420, 47316), (504, 39430), (560, 35487), (630, 31544), (720, 27601), (840, 23658), (1008, 19715), (1260, 15772), (1680, 11829), (2520, 7886), (3943, 5040)]