20839140

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:211

約数の個数: 192

約数和(自身を含む): 76608000

約数和(自身を除く): 55768860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 37, 42, 45, 54, 60, 63, 70, 74, 84, 90, 105, 108, 111, 126, 135, 140, 148, 149, 180, 185, 189, 210, 222, 252, 259, 270, 298, 315, 333, 370, 378, 420, 444, 447, 518, 540, 555, 596, 630, 666, 740, 745, 756, 777, 894, 945, 999, 1036, 1043, 1110, 1260, 1295, 1332, 1341, 1490, 1554, 1665, 1788, 1890, 1998, 2086, 2220, 2235, 2331, 2590, 2682, 2980, 3108, 3129, 3330, 3780, 3885, 3996, 4023, 4172, 4470, 4662, 4995, 5180, 5215, 5364, 5513, 6258, 6660, 6705, 6993, 7770, 8046, 8940, 9324, 9387, 9990, 10430, 11026, 11655, 12516, 13410, 13986, 15540, 15645, 16092, 16539, 18774, 19980, 20115, 20860, 22052, 23310, 26820, 27565, 27972, 28161, 31290, 33078, 34965, 37548, 38591, 40230, 46620, 46935, 49617, 55130, 56322, 62580, 66156, 69930, 77182, 80460, 82695, 93870, 99234, 110260, 112644, 115773, 139860, 140805, 148851, 154364, 165390, 187740, 192955, 198468, 231546, 248085, 281610, 297702, 330780, 347319, 385910, 463092, 496170, 563220, 578865, 595404, 694638, 744255, 771820, 992340, 1041957, 1157730, 1389276, 1488510, 1736595, 2083914, 2315460, 2977020, 3473190, 4167828, 5209785, 6946380, 10419570, 20839140]

約数ペア:

[(1, 20839140), (2, 10419570), (3, 6946380), (4, 5209785), (5, 4167828), (6, 3473190), (7, 2977020), (9, 2315460), (10, 2083914), (12, 1736595), (14, 1488510), (15, 1389276), (18, 1157730), (20, 1041957), (21, 992340), (27, 771820), (28, 744255), (30, 694638), (35, 595404), (36, 578865), (37, 563220), (42, 496170), (45, 463092), (54, 385910), (60, 347319), (63, 330780), (70, 297702), (74, 281610), (84, 248085), (90, 231546), (105, 198468), (108, 192955), (111, 187740), (126, 165390), (135, 154364), (140, 148851), (148, 140805), (149, 139860), (180, 115773), (185, 112644), (189, 110260), (210, 99234), (222, 93870), (252, 82695), (259, 80460), (270, 77182), (298, 69930), (315, 66156), (333, 62580), (370, 56322), (378, 55130), (420, 49617), (444, 46935), (447, 46620), (518, 40230), (540, 38591), (555, 37548), (596, 34965), (630, 33078), (666, 31290), (740, 28161), (745, 27972), (756, 27565), (777, 26820), (894, 23310), (945, 22052), (999, 20860), (1036, 20115), (1043, 19980), (1110, 18774), (1260, 16539), (1295, 16092), (1332, 15645), (1341, 15540), (1490, 13986), (1554, 13410), (1665, 12516), (1788, 11655), (1890, 11026), (1998, 10430), (2086, 9990), (2220, 9387), (2235, 9324), (2331, 8940), (2590, 8046), (2682, 7770), (2980, 6993), (3108, 6705), (3129, 6660), (3330, 6258), (3780, 5513), (3885, 5364), (3996, 5215), (4023, 5180), (4172, 4995), (4470, 4662)]