21498840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:178

約数の個数: 192

約数和(自身を含む): 78343200

約数和(自身を除く): 56844360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 61, 66, 72, 88, 89, 90, 99, 110, 120, 122, 132, 165, 178, 180, 183, 198, 220, 244, 264, 267, 305, 330, 356, 360, 366, 396, 440, 445, 488, 495, 534, 549, 610, 660, 671, 712, 732, 792, 801, 890, 915, 979, 990, 1068, 1098, 1220, 1320, 1335, 1342, 1464, 1602, 1780, 1830, 1958, 1980, 2013, 2136, 2196, 2440, 2670, 2684, 2745, 2937, 3204, 3355, 3560, 3660, 3916, 3960, 4005, 4026, 4392, 4895, 5340, 5368, 5429, 5490, 5874, 6039, 6408, 6710, 7320, 7832, 8010, 8052, 8811, 9790, 10065, 10680, 10858, 10980, 11748, 12078, 13420, 14685, 16020, 16104, 16287, 17622, 19580, 20130, 21716, 21960, 23496, 24156, 26840, 27145, 29370, 30195, 32040, 32574, 35244, 39160, 40260, 43432, 44055, 48312, 48861, 54290, 58740, 59719, 60390, 65148, 70488, 80520, 81435, 88110, 97722, 108580, 117480, 119438, 120780, 130296, 162870, 176220, 179157, 195444, 217160, 238876, 241560, 244305, 298595, 325740, 352440, 358314, 390888, 477752, 488610, 537471, 597190, 651480, 716628, 895785, 977220, 1074942, 1194380, 1433256, 1791570, 1954440, 2149884, 2388760, 2687355, 3583140, 4299768, 5374710, 7166280, 10749420, 21498840]

約数ペア:

[(1, 21498840), (2, 10749420), (3, 7166280), (4, 5374710), (5, 4299768), (6, 3583140), (8, 2687355), (9, 2388760), (10, 2149884), (11, 1954440), (12, 1791570), (15, 1433256), (18, 1194380), (20, 1074942), (22, 977220), (24, 895785), (30, 716628), (33, 651480), (36, 597190), (40, 537471), (44, 488610), (45, 477752), (55, 390888), (60, 358314), (61, 352440), (66, 325740), (72, 298595), (88, 244305), (89, 241560), (90, 238876), (99, 217160), (110, 195444), (120, 179157), (122, 176220), (132, 162870), (165, 130296), (178, 120780), (180, 119438), (183, 117480), (198, 108580), (220, 97722), (244, 88110), (264, 81435), (267, 80520), (305, 70488), (330, 65148), (356, 60390), (360, 59719), (366, 58740), (396, 54290), (440, 48861), (445, 48312), (488, 44055), (495, 43432), (534, 40260), (549, 39160), (610, 35244), (660, 32574), (671, 32040), (712, 30195), (732, 29370), (792, 27145), (801, 26840), (890, 24156), (915, 23496), (979, 21960), (990, 21716), (1068, 20130), (1098, 19580), (1220, 17622), (1320, 16287), (1335, 16104), (1342, 16020), (1464, 14685), (1602, 13420), (1780, 12078), (1830, 11748), (1958, 10980), (1980, 10858), (2013, 10680), (2136, 10065), (2196, 9790), (2440, 8811), (2670, 8052), (2684, 8010), (2745, 7832), (2937, 7320), (3204, 6710), (3355, 6408), (3560, 6039), (3660, 5874), (3916, 5490), (3960, 5429), (4005, 5368), (4026, 5340), (4392, 4895)]