21543480

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 192

約数和(自身を含む): 81768960

約数和(自身を除く): 60225480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 83, 84, 90, 103, 105, 120, 126, 140, 166, 168, 180, 206, 210, 249, 252, 280, 309, 315, 332, 360, 412, 415, 420, 498, 504, 515, 581, 618, 630, 664, 721, 747, 824, 830, 840, 927, 996, 1030, 1162, 1236, 1245, 1260, 1442, 1494, 1545, 1660, 1743, 1854, 1992, 2060, 2163, 2324, 2472, 2490, 2520, 2884, 2905, 2988, 3090, 3320, 3486, 3605, 3708, 3735, 4120, 4326, 4635, 4648, 4980, 5229, 5768, 5810, 5976, 6180, 6489, 6972, 7210, 7416, 7470, 8549, 8652, 8715, 9270, 9960, 10458, 10815, 11620, 12360, 12978, 13944, 14420, 14940, 17098, 17304, 17430, 18540, 20916, 21630, 23240, 25647, 25956, 26145, 28840, 29880, 32445, 34196, 34860, 37080, 41832, 42745, 43260, 51294, 51912, 52290, 59843, 64890, 68392, 69720, 76941, 85490, 86520, 102588, 104580, 119686, 128235, 129780, 153882, 170980, 179529, 205176, 209160, 239372, 256470, 259560, 299215, 307764, 341960, 359058, 384705, 478744, 512940, 538587, 598430, 615528, 718116, 769410, 897645, 1025880, 1077174, 1196860, 1436232, 1538820, 1795290, 2154348, 2393720, 2692935, 3077640, 3590580, 4308696, 5385870, 7181160, 10771740, 21543480]

約数ペア:

[(1, 21543480), (2, 10771740), (3, 7181160), (4, 5385870), (5, 4308696), (6, 3590580), (7, 3077640), (8, 2692935), (9, 2393720), (10, 2154348), (12, 1795290), (14, 1538820), (15, 1436232), (18, 1196860), (20, 1077174), (21, 1025880), (24, 897645), (28, 769410), (30, 718116), (35, 615528), (36, 598430), (40, 538587), (42, 512940), (45, 478744), (56, 384705), (60, 359058), (63, 341960), (70, 307764), (72, 299215), (83, 259560), (84, 256470), (90, 239372), (103, 209160), (105, 205176), (120, 179529), (126, 170980), (140, 153882), (166, 129780), (168, 128235), (180, 119686), (206, 104580), (210, 102588), (249, 86520), (252, 85490), (280, 76941), (309, 69720), (315, 68392), (332, 64890), (360, 59843), (412, 52290), (415, 51912), (420, 51294), (498, 43260), (504, 42745), (515, 41832), (581, 37080), (618, 34860), (630, 34196), (664, 32445), (721, 29880), (747, 28840), (824, 26145), (830, 25956), (840, 25647), (927, 23240), (996, 21630), (1030, 20916), (1162, 18540), (1236, 17430), (1245, 17304), (1260, 17098), (1442, 14940), (1494, 14420), (1545, 13944), (1660, 12978), (1743, 12360), (1854, 11620), (1992, 10815), (2060, 10458), (2163, 9960), (2324, 9270), (2472, 8715), (2490, 8652), (2520, 8549), (2884, 7470), (2905, 7416), (2988, 7210), (3090, 6972), (3320, 6489), (3486, 6180), (3605, 5976), (3708, 5810), (3735, 5768), (4120, 5229), (4326, 4980), (4635, 4648)]