28138320

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1861}}^1$

素因数の和:1890

約数の個数: 160

約数和(自身を含む): 110826240

約数和(自身を除く): 82687920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1861, 1890, 2160, 2520, 3024, 3722, 3780, 5040, 5583, 7444, 7560, 9305, 11166, 13027, 14888, 15120, 16749, 18610, 22332, 26054, 27915, 29776, 33498, 37220, 39081, 44664, 50247, 52108, 55830, 65135, 66996, 74440, 78162, 83745, 89328, 100494, 104216, 111660, 117243, 130270, 133992, 148880, 156324, 167490, 195405, 200988, 208432, 223320, 234486, 251235, 260540, 267984, 312648, 334980, 351729, 390810, 401976, 446640, 468972, 502470, 521080, 586215, 625296, 669960, 703458, 781620, 803952, 937944, 1004940, 1042160, 1172430, 1339920, 1406916, 1563240, 1758645, 1875888, 2009880, 2344860, 2813832, 3126480, 3517290, 4019760, 4689720, 5627664, 7034580, 9379440, 14069160, 28138320]

約数ペア:

[(1, 28138320), (2, 14069160), (3, 9379440), (4, 7034580), (5, 5627664), (6, 4689720), (7, 4019760), (8, 3517290), (9, 3126480), (10, 2813832), (12, 2344860), (14, 2009880), (15, 1875888), (16, 1758645), (18, 1563240), (20, 1406916), (21, 1339920), (24, 1172430), (27, 1042160), (28, 1004940), (30, 937944), (35, 803952), (36, 781620), (40, 703458), (42, 669960), (45, 625296), (48, 586215), (54, 521080), (56, 502470), (60, 468972), (63, 446640), (70, 401976), (72, 390810), (80, 351729), (84, 334980), (90, 312648), (105, 267984), (108, 260540), (112, 251235), (120, 234486), (126, 223320), (135, 208432), (140, 200988), (144, 195405), (168, 167490), (180, 156324), (189, 148880), (210, 133992), (216, 130270), (240, 117243), (252, 111660), (270, 104216), (280, 100494), (315, 89328), (336, 83745), (360, 78162), (378, 74440), (420, 66996), (432, 65135), (504, 55830), (540, 52108), (560, 50247), (630, 44664), (720, 39081), (756, 37220), (840, 33498), (945, 29776), (1008, 27915), (1080, 26054), (1260, 22332), (1512, 18610), (1680, 16749), (1861, 15120), (1890, 14888), (2160, 13027), (2520, 11166), (3024, 9305), (3722, 7560), (3780, 7444), (5040, 5583)]