21048930

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 192

約数和(自身を含む): 68618880

約数和(自身を除く): 47569950

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 37, 42, 43, 45, 49, 54, 63, 70, 74, 86, 90, 98, 105, 111, 126, 129, 135, 147, 185, 189, 210, 215, 222, 245, 258, 259, 270, 294, 301, 315, 333, 370, 378, 387, 430, 441, 490, 518, 555, 602, 630, 645, 666, 735, 774, 777, 882, 903, 945, 999, 1110, 1161, 1290, 1295, 1323, 1470, 1505, 1554, 1591, 1665, 1806, 1813, 1890, 1935, 1998, 2107, 2205, 2322, 2331, 2590, 2646, 2709, 3010, 3182, 3330, 3626, 3870, 3885, 4214, 4410, 4515, 4662, 4773, 4995, 5418, 5439, 5805, 6321, 6615, 6993, 7770, 7955, 8127, 9030, 9065, 9546, 9990, 10535, 10878, 11137, 11610, 11655, 12642, 13230, 13545, 13986, 14319, 15910, 16254, 16317, 18130, 18963, 21070, 22274, 23310, 23865, 27090, 27195, 28638, 31605, 32634, 33411, 34965, 37926, 40635, 42957, 47730, 48951, 54390, 55685, 56889, 63210, 66822, 69930, 71595, 77959, 81270, 81585, 85914, 94815, 97902, 100233, 111370, 113778, 143190, 155918, 163170, 167055, 189630, 200466, 214785, 233877, 244755, 284445, 300699, 334110, 389795, 429570, 467754, 489510, 501165, 568890, 601398, 701631, 779590, 1002330, 1169385, 1403262, 1503495, 2104893, 2338770, 3006990, 3508155, 4209786, 7016310, 10524465, 21048930]

約数ペア:

[(1, 21048930), (2, 10524465), (3, 7016310), (5, 4209786), (6, 3508155), (7, 3006990), (9, 2338770), (10, 2104893), (14, 1503495), (15, 1403262), (18, 1169385), (21, 1002330), (27, 779590), (30, 701631), (35, 601398), (37, 568890), (42, 501165), (43, 489510), (45, 467754), (49, 429570), (54, 389795), (63, 334110), (70, 300699), (74, 284445), (86, 244755), (90, 233877), (98, 214785), (105, 200466), (111, 189630), (126, 167055), (129, 163170), (135, 155918), (147, 143190), (185, 113778), (189, 111370), (210, 100233), (215, 97902), (222, 94815), (245, 85914), (258, 81585), (259, 81270), (270, 77959), (294, 71595), (301, 69930), (315, 66822), (333, 63210), (370, 56889), (378, 55685), (387, 54390), (430, 48951), (441, 47730), (490, 42957), (518, 40635), (555, 37926), (602, 34965), (630, 33411), (645, 32634), (666, 31605), (735, 28638), (774, 27195), (777, 27090), (882, 23865), (903, 23310), (945, 22274), (999, 21070), (1110, 18963), (1161, 18130), (1290, 16317), (1295, 16254), (1323, 15910), (1470, 14319), (1505, 13986), (1554, 13545), (1591, 13230), (1665, 12642), (1806, 11655), (1813, 11610), (1890, 11137), (1935, 10878), (1998, 10535), (2107, 9990), (2205, 9546), (2322, 9065), (2331, 9030), (2590, 8127), (2646, 7955), (2709, 7770), (3010, 6993), (3182, 6615), (3330, 6321), (3626, 5805), (3870, 5439), (3885, 5418), (4214, 4995), (4410, 4773), (4515, 4662)]