20871840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 74027520

約数和(自身を除く): 53155680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 59, 60, 66, 67, 80, 88, 96, 110, 118, 120, 132, 134, 160, 165, 176, 177, 201, 220, 236, 240, 264, 268, 295, 330, 335, 352, 354, 402, 440, 472, 480, 528, 536, 590, 649, 660, 670, 708, 737, 804, 880, 885, 944, 1005, 1056, 1072, 1180, 1298, 1320, 1340, 1416, 1474, 1608, 1760, 1770, 1888, 1947, 2010, 2144, 2211, 2360, 2596, 2640, 2680, 2832, 2948, 3216, 3245, 3540, 3685, 3894, 3953, 4020, 4422, 4720, 5192, 5280, 5360, 5664, 5896, 6432, 6490, 7080, 7370, 7788, 7906, 8040, 8844, 9440, 9735, 10384, 10720, 11055, 11792, 11859, 12980, 14160, 14740, 15576, 15812, 16080, 17688, 19470, 19765, 20768, 22110, 23584, 23718, 25960, 28320, 29480, 31152, 31624, 32160, 35376, 38940, 39530, 43483, 44220, 47436, 51920, 58960, 59295, 62304, 63248, 70752, 77880, 79060, 86966, 88440, 94872, 103840, 117920, 118590, 126496, 130449, 155760, 158120, 173932, 176880, 189744, 217415, 237180, 260898, 311520, 316240, 347864, 353760, 379488, 434830, 474360, 521796, 632480, 652245, 695728, 869660, 948720, 1043592, 1304490, 1391456, 1739320, 1897440, 2087184, 2608980, 3478640, 4174368, 5217960, 6957280, 10435920, 20871840]

約数ペア:

[(1, 20871840), (2, 10435920), (3, 6957280), (4, 5217960), (5, 4174368), (6, 3478640), (8, 2608980), (10, 2087184), (11, 1897440), (12, 1739320), (15, 1391456), (16, 1304490), (20, 1043592), (22, 948720), (24, 869660), (30, 695728), (32, 652245), (33, 632480), (40, 521796), (44, 474360), (48, 434830), (55, 379488), (59, 353760), (60, 347864), (66, 316240), (67, 311520), (80, 260898), (88, 237180), (96, 217415), (110, 189744), (118, 176880), (120, 173932), (132, 158120), (134, 155760), (160, 130449), (165, 126496), (176, 118590), (177, 117920), (201, 103840), (220, 94872), (236, 88440), (240, 86966), (264, 79060), (268, 77880), (295, 70752), (330, 63248), (335, 62304), (352, 59295), (354, 58960), (402, 51920), (440, 47436), (472, 44220), (480, 43483), (528, 39530), (536, 38940), (590, 35376), (649, 32160), (660, 31624), (670, 31152), (708, 29480), (737, 28320), (804, 25960), (880, 23718), (885, 23584), (944, 22110), (1005, 20768), (1056, 19765), (1072, 19470), (1180, 17688), (1298, 16080), (1320, 15812), (1340, 15576), (1416, 14740), (1474, 14160), (1608, 12980), (1760, 11859), (1770, 11792), (1888, 11055), (1947, 10720), (2010, 10384), (2144, 9735), (2211, 9440), (2360, 8844), (2596, 8040), (2640, 7906), (2680, 7788), (2832, 7370), (2948, 7080), (3216, 6490), (3245, 6432), (3540, 5896), (3685, 5664), (3894, 5360), (3953, 5280), (4020, 5192), (4422, 4720)]