21490920

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1$

素因数の和:107

約数の個数: 224

約数和(自身を含む): 80269920

約数和(自身を除く): 58779000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 67, 72, 81, 88, 90, 99, 108, 110, 120, 132, 134, 135, 162, 165, 180, 198, 201, 216, 220, 243, 264, 268, 270, 297, 324, 330, 335, 360, 396, 402, 405, 440, 486, 495, 536, 540, 594, 603, 648, 660, 670, 729, 737, 792, 804, 810, 891, 972, 990, 1005, 1080, 1188, 1206, 1215, 1320, 1340, 1458, 1474, 1485, 1608, 1620, 1782, 1809, 1944, 1980, 2010, 2211, 2376, 2412, 2430, 2673, 2680, 2916, 2948, 2970, 3015, 3240, 3564, 3618, 3645, 3685, 3960, 4020, 4422, 4455, 4824, 4860, 5346, 5427, 5832, 5896, 5940, 6030, 6633, 7128, 7236, 7290, 7370, 8019, 8040, 8844, 8910, 9045, 9720, 10692, 10854, 11055, 11880, 12060, 13266, 13365, 14472, 14580, 14740, 16038, 16281, 17688, 17820, 18090, 19899, 21384, 21708, 22110, 24120, 26532, 26730, 27135, 29160, 29480, 32076, 32562, 33165, 35640, 36180, 39798, 40095, 43416, 44220, 48843, 53064, 53460, 54270, 59697, 64152, 65124, 66330, 72360, 79596, 80190, 81405, 88440, 97686, 99495, 106920, 108540, 119394, 130248, 132660, 159192, 160380, 162810, 179091, 195372, 198990, 217080, 238788, 244215, 265320, 298485, 320760, 325620, 358182, 390744, 397980, 477576, 488430, 537273, 596970, 651240, 716364, 795960, 895455, 976860, 1074546, 1193940, 1432728, 1790910, 1953720, 2149092, 2387880, 2686365, 3581820, 4298184, 5372730, 7163640, 10745460, 21490920]

約数ペア:

[(1, 21490920), (2, 10745460), (3, 7163640), (4, 5372730), (5, 4298184), (6, 3581820), (8, 2686365), (9, 2387880), (10, 2149092), (11, 1953720), (12, 1790910), (15, 1432728), (18, 1193940), (20, 1074546), (22, 976860), (24, 895455), (27, 795960), (30, 716364), (33, 651240), (36, 596970), (40, 537273), (44, 488430), (45, 477576), (54, 397980), (55, 390744), (60, 358182), (66, 325620), (67, 320760), (72, 298485), (81, 265320), (88, 244215), (90, 238788), (99, 217080), (108, 198990), (110, 195372), (120, 179091), (132, 162810), (134, 160380), (135, 159192), (162, 132660), (165, 130248), (180, 119394), (198, 108540), (201, 106920), (216, 99495), (220, 97686), (243, 88440), (264, 81405), (268, 80190), (270, 79596), (297, 72360), (324, 66330), (330, 65124), (335, 64152), (360, 59697), (396, 54270), (402, 53460), (405, 53064), (440, 48843), (486, 44220), (495, 43416), (536, 40095), (540, 39798), (594, 36180), (603, 35640), (648, 33165), (660, 32562), (670, 32076), (729, 29480), (737, 29160), (792, 27135), (804, 26730), (810, 26532), (891, 24120), (972, 22110), (990, 21708), (1005, 21384), (1080, 19899), (1188, 18090), (1206, 17820), (1215, 17688), (1320, 16281), (1340, 16038), (1458, 14740), (1474, 14580), (1485, 14472), (1608, 13365), (1620, 13266), (1782, 12060), (1809, 11880), (1944, 11055), (1980, 10854), (2010, 10692), (2211, 9720), (2376, 9045), (2412, 8910), (2430, 8844), (2673, 8040), (2680, 8019), (2916, 7370), (2948, 7290), (2970, 7236), (3015, 7128), (3240, 6633), (3564, 6030), (3618, 5940), (3645, 5896), (3685, 5832), (3960, 5427), (4020, 5346), (4422, 4860), (4455, 4824)]