21237120

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{1229}}^1$

素因数の和:1257

約数の個数: 128

約数和(自身を含む): 75276000

約数和(自身を除く): 54038880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 864, 960, 1080, 1152, 1229, 1440, 1728, 1920, 2160, 2458, 2880, 3456, 3687, 4320, 4916, 5760, 6145, 7374, 8640, 9832, 11061, 12290, 14748, 17280, 18435, 19664, 22122, 24580, 29496, 33183, 36870, 39328, 44244, 49160, 55305, 58992, 66366, 73740, 78656, 88488, 98320, 110610, 117984, 132732, 147480, 157312, 165915, 176976, 196640, 221220, 235968, 265464, 294960, 331830, 353952, 393280, 442440, 471936, 530928, 589920, 663660, 707904, 786560, 884880, 1061856, 1179840, 1327320, 1415808, 1769760, 2123712, 2359680, 2654640, 3539520, 4247424, 5309280, 7079040, 10618560, 21237120]

約数ペア:

[(1, 21237120), (2, 10618560), (3, 7079040), (4, 5309280), (5, 4247424), (6, 3539520), (8, 2654640), (9, 2359680), (10, 2123712), (12, 1769760), (15, 1415808), (16, 1327320), (18, 1179840), (20, 1061856), (24, 884880), (27, 786560), (30, 707904), (32, 663660), (36, 589920), (40, 530928), (45, 471936), (48, 442440), (54, 393280), (60, 353952), (64, 331830), (72, 294960), (80, 265464), (90, 235968), (96, 221220), (108, 196640), (120, 176976), (128, 165915), (135, 157312), (144, 147480), (160, 132732), (180, 117984), (192, 110610), (216, 98320), (240, 88488), (270, 78656), (288, 73740), (320, 66366), (360, 58992), (384, 55305), (432, 49160), (480, 44244), (540, 39328), (576, 36870), (640, 33183), (720, 29496), (864, 24580), (960, 22122), (1080, 19664), (1152, 18435), (1229, 17280), (1440, 14748), (1728, 12290), (1920, 11061), (2160, 9832), (2458, 8640), (2880, 7374), (3456, 6145), (3687, 5760), (4320, 4916)]