21495438720

素因数分解:

$2^7\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:300

約数の個数: 1024

約数和(自身を含む): 94003200000

約数和(自身を除く): 72507761280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 19, 20, 21, 24, 27, 28, 30, 32, 35, 36, 38, 40, 42, 45, 47, 48, 54, 56, 57, 60, 63, 64, 70, 72, 76, 80, 84, 90, 94, 95, 96, 105, 108, 112, 114, 120, 126, 128, 133, 135, 140, 141, 144, 152, 160, 168, 171, 180, 188, 189, 190, 192, 199, 210, 216, 224, 228, 235, 240, 252, 266, 270, 280, 282, 285, 288, 304, 315, 320, 329, 336, 342, 360, 376, 378, 380, 384, 398, 399, 420, 423, 432, 448, 456, 470, 480, 504, 513, 532, 540, 560, 564, 570, 576, 597, 608, 630, 640, 658, 665, 672, 684, 705, 720, 752, 756, 760, 796, 798, 840, 846, 855, 864, 893, 896, 912, 940, 945, 960, 987, 995, 1008, 1026, 1064, 1080, 1120, 1128, 1140, 1152, 1194, 1197, 1216, 1260, 1269, 1316, 1330, 1344, 1368, 1393, 1410, 1440, 1504, 1512, 1520, 1592, 1596, 1645, 1680, 1692, 1710, 1728, 1786, 1791, 1824, 1880, 1890, 1920, 1974, 1990, 1995, 2016, 2052, 2115, 2128, 2160, 2240, 2256, 2280, 2388, 2394, 2432, 2520, 2538, 2565, 2632, 2660, 2679, 2688, 2736, 2786, 2820, 2880, 2961, 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約数ペア:

[(1, 21495438720), (2, 10747719360), (3, 7165146240), (4, 5373859680), (5, 4299087744), (6, 3582573120), (7, 3070776960), (8, 2686929840), (9, 2388382080), (10, 2149543872), (12, 1791286560), (14, 1535388480), (15, 1433029248), (16, 1343464920), (18, 1194191040), (19, 1131338880), (20, 1074771936), (21, 1023592320), (24, 895643280), (27, 796127360), (28, 767694240), (30, 716514624), (32, 671732460), (35, 614155392), (36, 597095520), (38, 565669440), (40, 537385968), (42, 511796160), (45, 477676416), (47, 457349760), (48, 447821640), (54, 398063680), (56, 383847120), (57, 377112960), (60, 358257312), (63, 341197440), (64, 335866230), (70, 307077696), (72, 298547760), (76, 282834720), (80, 268692984), (84, 255898080), (90, 238838208), (94, 228674880), (95, 226267776), (96, 223910820), (105, 204718464), (108, 199031840), (112, 191923560), (114, 188556480), (120, 179128656), (126, 170598720), (128, 167933115), (133, 161619840), (135, 159225472), (140, 153538848), (141, 152449920), (144, 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