21576240

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1427}}^1$

素因数の和:1456

約数の個数: 160

約数和(自身を含む): 84994560

約数和(自身を除く): 63418320

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, 1427, 1512, 1680, 1890, 2160, 2520, 2854, 3024, 3780, 4281, 5040, 5708, 7135, 7560, 8562, 9989, 11416, 12843, 14270, 15120, 17124, 19978, 21405, 22832, 25686, 28540, 29967, 34248, 38529, 39956, 42810, 49945, 51372, 57080, 59934, 64215, 68496, 77058, 79912, 85620, 89901, 99890, 102744, 114160, 119868, 128430, 149835, 154116, 159824, 171240, 179802, 192645, 199780, 205488, 239736, 256860, 269703, 299670, 308232, 342480, 359604, 385290, 399560, 449505, 479472, 513720, 539406, 599340, 616464, 719208, 770580, 799120, 899010, 1027440, 1078812, 1198680, 1348515, 1438416, 1541160, 1798020, 2157624, 2397360, 2697030, 3082320, 3596040, 4315248, 5394060, 7192080, 10788120, 21576240]

約数ペア:

[(1, 21576240), (2, 10788120), (3, 7192080), (4, 5394060), (5, 4315248), (6, 3596040), (7, 3082320), (8, 2697030), (9, 2397360), (10, 2157624), (12, 1798020), (14, 1541160), (15, 1438416), (16, 1348515), (18, 1198680), (20, 1078812), (21, 1027440), (24, 899010), (27, 799120), (28, 770580), (30, 719208), (35, 616464), (36, 599340), (40, 539406), (42, 513720), (45, 479472), (48, 449505), (54, 399560), (56, 385290), (60, 359604), (63, 342480), (70, 308232), (72, 299670), (80, 269703), (84, 256860), (90, 239736), (105, 205488), (108, 199780), (112, 192645), (120, 179802), (126, 171240), (135, 159824), (140, 154116), (144, 149835), (168, 128430), (180, 119868), (189, 114160), (210, 102744), (216, 99890), (240, 89901), (252, 85620), (270, 79912), (280, 77058), (315, 68496), (336, 64215), (360, 59934), (378, 57080), (420, 51372), (432, 49945), (504, 42810), (540, 39956), (560, 38529), (630, 34248), (720, 29967), (756, 28540), (840, 25686), (945, 22832), (1008, 21405), (1080, 19978), (1260, 17124), (1427, 15120), (1512, 14270), (1680, 12843), (1890, 11416), (2160, 9989), (2520, 8562), (2854, 7560), (3024, 7135), (3780, 5708), (4281, 5040)]