21378600

素因数分解:

$2^3\times 3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:169

約数の個数: 192

約数和(自身を含む): 76334400

約数和(自身を除く): 54955800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 37, 40, 45, 50, 54, 60, 72, 74, 75, 90, 100, 107, 108, 111, 120, 135, 148, 150, 180, 185, 200, 214, 216, 222, 225, 270, 296, 300, 321, 333, 360, 370, 428, 444, 450, 535, 540, 555, 600, 642, 666, 675, 740, 856, 888, 900, 925, 963, 999, 1070, 1080, 1110, 1284, 1332, 1350, 1480, 1605, 1665, 1800, 1850, 1926, 1998, 2140, 2220, 2568, 2664, 2675, 2700, 2775, 2889, 3210, 3330, 3700, 3852, 3959, 3996, 4280, 4440, 4815, 4995, 5350, 5400, 5550, 5778, 6420, 6660, 7400, 7704, 7918, 7992, 8025, 8325, 9630, 9990, 10700, 11100, 11556, 11877, 12840, 13320, 14445, 15836, 16050, 16650, 19260, 19795, 19980, 21400, 22200, 23112, 23754, 24075, 24975, 28890, 31672, 32100, 33300, 35631, 38520, 39590, 39960, 47508, 48150, 49950, 57780, 59385, 64200, 66600, 71262, 72225, 79180, 95016, 96300, 98975, 99900, 106893, 115560, 118770, 142524, 144450, 158360, 178155, 192600, 197950, 199800, 213786, 237540, 285048, 288900, 296925, 356310, 395900, 427572, 475080, 534465, 577800, 593850, 712620, 791800, 855144, 890775, 1068930, 1187700, 1425240, 1781550, 2137860, 2375400, 2672325, 3563100, 4275720, 5344650, 7126200, 10689300, 21378600]

約数ペア:

[(1, 21378600), (2, 10689300), (3, 7126200), (4, 5344650), (5, 4275720), (6, 3563100), (8, 2672325), (9, 2375400), (10, 2137860), (12, 1781550), (15, 1425240), (18, 1187700), (20, 1068930), (24, 890775), (25, 855144), (27, 791800), (30, 712620), (36, 593850), (37, 577800), (40, 534465), (45, 475080), (50, 427572), (54, 395900), (60, 356310), (72, 296925), (74, 288900), (75, 285048), (90, 237540), (100, 213786), (107, 199800), (108, 197950), (111, 192600), (120, 178155), (135, 158360), (148, 144450), (150, 142524), (180, 118770), (185, 115560), (200, 106893), (214, 99900), (216, 98975), (222, 96300), (225, 95016), (270, 79180), (296, 72225), (300, 71262), (321, 66600), (333, 64200), (360, 59385), (370, 57780), (428, 49950), (444, 48150), (450, 47508), (535, 39960), (540, 39590), (555, 38520), (600, 35631), (642, 33300), (666, 32100), (675, 31672), (740, 28890), (856, 24975), (888, 24075), (900, 23754), (925, 23112), (963, 22200), (999, 21400), (1070, 19980), (1080, 19795), (1110, 19260), (1284, 16650), (1332, 16050), (1350, 15836), (1480, 14445), (1605, 13320), (1665, 12840), (1800, 11877), (1850, 11556), (1926, 11100), (1998, 10700), (2140, 9990), (2220, 9630), (2568, 8325), (2664, 8025), (2675, 7992), (2700, 7918), (2775, 7704), (2889, 7400), (3210, 6660), (3330, 6420), (3700, 5778), (3852, 5550), (3959, 5400), (3996, 5350), (4280, 4995), (4440, 4815)]