20471360

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:93

約数の個数: 224

約数和(自身を含む): 64861440

約数和(自身を除く): 44390080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 32, 35, 37, 38, 40, 52, 56, 64, 65, 70, 74, 76, 80, 91, 95, 104, 112, 130, 133, 140, 148, 152, 160, 182, 185, 190, 208, 224, 247, 259, 260, 266, 280, 296, 304, 320, 364, 370, 380, 416, 448, 455, 481, 494, 518, 520, 532, 560, 592, 608, 665, 703, 728, 740, 760, 832, 910, 962, 988, 1036, 1040, 1064, 1120, 1184, 1216, 1235, 1295, 1330, 1406, 1456, 1480, 1520, 1729, 1820, 1924, 1976, 2072, 2080, 2128, 2240, 2368, 2405, 2470, 2590, 2660, 2812, 2912, 2960, 3040, 3367, 3458, 3515, 3640, 3848, 3952, 4144, 4160, 4256, 4810, 4921, 4940, 5180, 5320, 5624, 5824, 5920, 6080, 6734, 6916, 7030, 7280, 7696, 7904, 8288, 8512, 8645, 9139, 9620, 9842, 9880, 10360, 10640, 11248, 11840, 13468, 13832, 14060, 14560, 15392, 15808, 16576, 16835, 17290, 18278, 19240, 19684, 19760, 20720, 21280, 22496, 24605, 26936, 27664, 28120, 29120, 30784, 33670, 34580, 36556, 38480, 39368, 39520, 41440, 42560, 44992, 45695, 49210, 53872, 55328, 56240, 63973, 67340, 69160, 73112, 76960, 78736, 79040, 82880, 91390, 98420, 107744, 110656, 112480, 127946, 134680, 138320, 146224, 153920, 157472, 182780, 196840, 215488, 224960, 255892, 269360, 276640, 292448, 314944, 319865, 365560, 393680, 511784, 538720, 553280, 584896, 639730, 731120, 787360, 1023568, 1077440, 1279460, 1462240, 1574720, 2047136, 2558920, 2924480, 4094272, 5117840, 10235680, 20471360]

約数ペア:

[(1, 20471360), (2, 10235680), (4, 5117840), (5, 4094272), (7, 2924480), (8, 2558920), (10, 2047136), (13, 1574720), (14, 1462240), (16, 1279460), (19, 1077440), (20, 1023568), (26, 787360), (28, 731120), (32, 639730), (35, 584896), (37, 553280), (38, 538720), (40, 511784), (52, 393680), (56, 365560), (64, 319865), (65, 314944), (70, 292448), (74, 276640), (76, 269360), (80, 255892), (91, 224960), (95, 215488), (104, 196840), (112, 182780), (130, 157472), (133, 153920), (140, 146224), (148, 138320), (152, 134680), (160, 127946), (182, 112480), (185, 110656), (190, 107744), (208, 98420), (224, 91390), (247, 82880), (259, 79040), (260, 78736), (266, 76960), (280, 73112), (296, 69160), (304, 67340), (320, 63973), (364, 56240), (370, 55328), (380, 53872), (416, 49210), (448, 45695), (455, 44992), (481, 42560), (494, 41440), (518, 39520), (520, 39368), (532, 38480), (560, 36556), (592, 34580), (608, 33670), (665, 30784), (703, 29120), (728, 28120), (740, 27664), (760, 26936), (832, 24605), (910, 22496), (962, 21280), (988, 20720), (1036, 19760), (1040, 19684), (1064, 19240), (1120, 18278), (1184, 17290), (1216, 16835), (1235, 16576), (1295, 15808), (1330, 15392), (1406, 14560), (1456, 14060), (1480, 13832), (1520, 13468), (1729, 11840), (1820, 11248), (1924, 10640), (1976, 10360), (2072, 9880), (2080, 9842), (2128, 9620), (2240, 9139), (2368, 8645), (2405, 8512), (2470, 8288), (2590, 7904), (2660, 7696), (2812, 7280), (2912, 7030), (2960, 6916), (3040, 6734), (3367, 6080), (3458, 5920), (3515, 5824), (3640, 5624), (3848, 5320), (3952, 5180), (4144, 4940), (4160, 4921), (4256, 4810)]