20811840

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:209

約数の個数: 224

約数和(自身を含む): 79979520

約数和(自身を除く): 59167680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 32, 35, 38, 40, 42, 48, 56, 57, 60, 64, 70, 76, 80, 84, 95, 96, 105, 112, 114, 120, 133, 140, 152, 160, 163, 168, 190, 192, 210, 224, 228, 240, 266, 280, 285, 304, 320, 326, 336, 380, 399, 420, 448, 456, 480, 489, 532, 560, 570, 608, 652, 665, 672, 760, 798, 815, 840, 912, 960, 978, 1064, 1120, 1140, 1141, 1216, 1304, 1330, 1344, 1520, 1596, 1630, 1680, 1824, 1956, 1995, 2128, 2240, 2280, 2282, 2445, 2608, 2660, 3040, 3097, 3192, 3260, 3360, 3423, 3648, 3912, 3990, 4256, 4560, 4564, 4890, 5216, 5320, 5705, 6080, 6194, 6384, 6520, 6720, 6846, 7824, 7980, 8512, 9120, 9128, 9291, 9780, 10432, 10640, 11410, 12388, 12768, 13040, 13692, 15485, 15648, 15960, 17115, 18240, 18256, 18582, 19560, 21280, 21679, 22820, 24776, 25536, 26080, 27384, 30970, 31296, 31920, 34230, 36512, 37164, 39120, 42560, 43358, 45640, 46455, 49552, 52160, 54768, 61940, 63840, 65037, 68460, 73024, 74328, 78240, 86716, 91280, 92910, 99104, 108395, 109536, 123880, 127680, 130074, 136920, 148656, 156480, 173432, 182560, 185820, 198208, 216790, 219072, 247760, 260148, 273840, 297312, 325185, 346864, 365120, 371640, 433580, 495520, 520296, 547680, 594624, 650370, 693728, 743280, 867160, 991040, 1040592, 1095360, 1300740, 1387456, 1486560, 1734320, 2081184, 2601480, 2973120, 3468640, 4162368, 5202960, 6937280, 10405920, 20811840]

約数ペア:

[(1, 20811840), (2, 10405920), (3, 6937280), (4, 5202960), (5, 4162368), (6, 3468640), (7, 2973120), (8, 2601480), (10, 2081184), (12, 1734320), (14, 1486560), (15, 1387456), (16, 1300740), (19, 1095360), (20, 1040592), (21, 991040), (24, 867160), (28, 743280), (30, 693728), (32, 650370), (35, 594624), (38, 547680), (40, 520296), (42, 495520), (48, 433580), (56, 371640), (57, 365120), (60, 346864), (64, 325185), (70, 297312), (76, 273840), (80, 260148), (84, 247760), (95, 219072), (96, 216790), (105, 198208), (112, 185820), (114, 182560), (120, 173432), (133, 156480), (140, 148656), (152, 136920), (160, 130074), (163, 127680), (168, 123880), (190, 109536), (192, 108395), (210, 99104), (224, 92910), (228, 91280), (240, 86716), (266, 78240), (280, 74328), (285, 73024), (304, 68460), (320, 65037), (326, 63840), (336, 61940), (380, 54768), (399, 52160), (420, 49552), (448, 46455), (456, 45640), (480, 43358), (489, 42560), (532, 39120), (560, 37164), (570, 36512), (608, 34230), (652, 31920), (665, 31296), (672, 30970), (760, 27384), (798, 26080), (815, 25536), (840, 24776), (912, 22820), (960, 21679), (978, 21280), (1064, 19560), (1120, 18582), (1140, 18256), (1141, 18240), (1216, 17115), (1304, 15960), (1330, 15648), (1344, 15485), (1520, 13692), (1596, 13040), (1630, 12768), (1680, 12388), (1824, 11410), (1956, 10640), (1995, 10432), (2128, 9780), (2240, 9291), (2280, 9128), (2282, 9120), (2445, 8512), (2608, 7980), (2660, 7824), (3040, 6846), (3097, 6720), (3192, 6520), (3260, 6384), (3360, 6194), (3423, 6080), (3648, 5705), (3912, 5320), (3990, 5216), (4256, 4890), (4560, 4564)]