21389760

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{1061}}^1$

素因数の和:1091

約数の個数: 168

約数和(自身を含む): 84161376

約数和(自身を除く): 62771616

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1061, 1120, 1260, 1344, 1440, 1680, 2016, 2122, 2240, 2520, 2880, 3183, 3360, 4032, 4244, 5040, 5305, 6366, 6720, 7427, 8488, 9549, 10080, 10610, 12732, 14854, 15915, 16976, 19098, 20160, 21220, 22281, 25464, 29708, 31830, 33952, 37135, 38196, 42440, 44562, 47745, 50928, 59416, 63660, 66843, 67904, 74270, 76392, 84880, 89124, 95490, 101856, 111405, 118832, 127320, 133686, 148540, 152784, 169760, 178248, 190980, 203712, 222810, 237664, 254640, 267372, 297080, 305568, 334215, 339520, 356496, 381960, 445620, 475328, 509280, 534744, 594160, 611136, 668430, 712992, 763920, 891240, 1018560, 1069488, 1188320, 1336860, 1425984, 1527840, 1782480, 2138976, 2376640, 2673720, 3055680, 3564960, 4277952, 5347440, 7129920, 10694880, 21389760]

約数ペア:

[(1, 21389760), (2, 10694880), (3, 7129920), (4, 5347440), (5, 4277952), (6, 3564960), (7, 3055680), (8, 2673720), (9, 2376640), (10, 2138976), (12, 1782480), (14, 1527840), (15, 1425984), (16, 1336860), (18, 1188320), (20, 1069488), (21, 1018560), (24, 891240), (28, 763920), (30, 712992), (32, 668430), (35, 611136), (36, 594160), (40, 534744), (42, 509280), (45, 475328), (48, 445620), (56, 381960), (60, 356496), (63, 339520), (64, 334215), (70, 305568), (72, 297080), (80, 267372), (84, 254640), (90, 237664), (96, 222810), (105, 203712), (112, 190980), (120, 178248), (126, 169760), (140, 152784), (144, 148540), (160, 133686), (168, 127320), (180, 118832), (192, 111405), (210, 101856), (224, 95490), (240, 89124), (252, 84880), (280, 76392), (288, 74270), (315, 67904), (320, 66843), (336, 63660), (360, 59416), (420, 50928), (448, 47745), (480, 44562), (504, 42440), (560, 38196), (576, 37135), (630, 33952), (672, 31830), (720, 29708), (840, 25464), (960, 22281), (1008, 21220), (1061, 20160), (1120, 19098), (1260, 16976), (1344, 15915), (1440, 14854), (1680, 12732), (2016, 10610), (2122, 10080), (2240, 9549), (2520, 8488), (2880, 7427), (3183, 6720), (3360, 6366), (4032, 5305), (4244, 5040)]