21851280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 240

約数和(自身を含む): 83566080

約数和(自身を除く): 61714800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 31, 33, 36, 40, 44, 45, 48, 55, 60, 62, 66, 72, 80, 88, 89, 90, 93, 99, 110, 120, 124, 132, 144, 155, 165, 176, 178, 180, 186, 198, 220, 240, 248, 264, 267, 279, 310, 330, 341, 356, 360, 372, 396, 440, 445, 465, 495, 496, 528, 534, 558, 620, 660, 682, 712, 720, 744, 792, 801, 880, 890, 930, 979, 990, 1023, 1068, 1116, 1240, 1320, 1335, 1364, 1395, 1424, 1488, 1584, 1602, 1705, 1780, 1860, 1958, 1980, 2046, 2136, 2232, 2480, 2640, 2670, 2728, 2759, 2790, 2937, 3069, 3204, 3410, 3560, 3720, 3916, 3960, 4005, 4092, 4272, 4464, 4895, 5115, 5340, 5456, 5518, 5580, 5874, 6138, 6408, 6820, 7120, 7440, 7832, 7920, 8010, 8184, 8277, 8811, 9790, 10230, 10680, 11036, 11160, 11748, 12276, 12816, 13640, 13795, 14685, 15345, 15664, 16020, 16368, 16554, 17622, 19580, 20460, 21360, 22072, 22320, 23496, 24552, 24831, 27280, 27590, 29370, 30349, 30690, 32040, 33108, 35244, 39160, 40920, 41385, 44055, 44144, 46992, 49104, 49662, 55180, 58740, 60698, 61380, 64080, 66216, 70488, 78320, 81840, 82770, 88110, 91047, 99324, 110360, 117480, 121396, 122760, 124155, 132432, 140976, 151745, 165540, 176220, 182094, 198648, 220720, 234960, 242792, 245520, 248310, 273141, 303490, 331080, 352440, 364188, 397296, 455235, 485584, 496620, 546282, 606980, 662160, 704880, 728376, 910470, 993240, 1092564, 1213960, 1365705, 1456752, 1820940, 1986480, 2185128, 2427920, 2731410, 3641880, 4370256, 5462820, 7283760, 10925640, 21851280]

約数ペア:

[(1, 21851280), (2, 10925640), (3, 7283760), (4, 5462820), (5, 4370256), (6, 3641880), (8, 2731410), (9, 2427920), (10, 2185128), (11, 1986480), (12, 1820940), (15, 1456752), (16, 1365705), (18, 1213960), (20, 1092564), (22, 993240), (24, 910470), (30, 728376), (31, 704880), (33, 662160), (36, 606980), (40, 546282), (44, 496620), (45, 485584), (48, 455235), (55, 397296), (60, 364188), (62, 352440), (66, 331080), (72, 303490), (80, 273141), (88, 248310), (89, 245520), (90, 242792), (93, 234960), (99, 220720), (110, 198648), (120, 182094), (124, 176220), (132, 165540), (144, 151745), (155, 140976), (165, 132432), (176, 124155), (178, 122760), (180, 121396), (186, 117480), (198, 110360), (220, 99324), (240, 91047), (248, 88110), (264, 82770), (267, 81840), (279, 78320), (310, 70488), (330, 66216), (341, 64080), (356, 61380), (360, 60698), (372, 58740), (396, 55180), (440, 49662), (445, 49104), (465, 46992), (495, 44144), (496, 44055), (528, 41385), (534, 40920), (558, 39160), (620, 35244), (660, 33108), (682, 32040), (712, 30690), (720, 30349), (744, 29370), (792, 27590), (801, 27280), (880, 24831), (890, 24552), (930, 23496), (979, 22320), (990, 22072), (1023, 21360), (1068, 20460), (1116, 19580), (1240, 17622), (1320, 16554), (1335, 16368), (1364, 16020), (1395, 15664), (1424, 15345), (1488, 14685), (1584, 13795), (1602, 13640), (1705, 12816), (1780, 12276), (1860, 11748), (1958, 11160), (1980, 11036), (2046, 10680), (2136, 10230), (2232, 9790), (2480, 8811), (2640, 8277), (2670, 8184), (2728, 8010), (2759, 7920), (2790, 7832), (2937, 7440), (3069, 7120), (3204, 6820), (3410, 6408), (3560, 6138), (3720, 5874), (3916, 5580), (3960, 5518), (4005, 5456), (4092, 5340), (4272, 5115), (4464, 4895)]