18920381840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{2131}}^1$

素因数の和:2305

約数の個数: 160

約数和(自身を含む): 47110377600

約数和(自身を除く): 28189995760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 43, 58, 80, 86, 89, 116, 145, 172, 178, 215, 232, 290, 344, 356, 430, 445, 464, 580, 688, 712, 860, 890, 1160, 1247, 1424, 1720, 1780, 2131, 2320, 2494, 2581, 3440, 3560, 3827, 4262, 4988, 5162, 6235, 7120, 7654, 8524, 9976, 10324, 10655, 12470, 12905, 15308, 17048, 19135, 19952, 20648, 21310, 24940, 25810, 30616, 34096, 38270, 41296, 42620, 49880, 51620, 61232, 61799, 76540, 85240, 91633, 99760, 103240, 110983, 123598, 153080, 170480, 183266, 189659, 206480, 221966, 247196, 306160, 308995, 366532, 379318, 443932, 458165, 494392, 554915, 617990, 733064, 758636, 887864, 916330, 948295, 988784, 1109830, 1235980, 1466128, 1517272, 1775728, 1832660, 1896590, 2219660, 2471960, 2657357, 3034544, 3665320, 3793180, 4439320, 4943920, 5314714, 5500111, 7330640, 7586360, 8155337, 8878640, 10629428, 11000222, 13286785, 15172720, 16310674, 21258856, 22000444, 26573570, 27500555, 32621348, 40776685, 42517712, 44000888, 53147140, 55001110, 65242696, 81553370, 88001776, 106294280, 110002220, 130485392, 163106740, 212588560, 220004440, 236504773, 326213480, 440008880, 473009546, 652426960, 946019092, 1182523865, 1892038184, 2365047730, 3784076368, 4730095460, 9460190920, 18920381840]

約数ペア:

[(1, 18920381840), (2, 9460190920), (4, 4730095460), (5, 3784076368), (8, 2365047730), (10, 1892038184), (16, 1182523865), (20, 946019092), (29, 652426960), (40, 473009546), (43, 440008880), (58, 326213480), (80, 236504773), (86, 220004440), (89, 212588560), (116, 163106740), (145, 130485392), (172, 110002220), (178, 106294280), (215, 88001776), (232, 81553370), (290, 65242696), (344, 55001110), (356, 53147140), (430, 44000888), (445, 42517712), (464, 40776685), (580, 32621348), (688, 27500555), (712, 26573570), (860, 22000444), (890, 21258856), (1160, 16310674), (1247, 15172720), (1424, 13286785), (1720, 11000222), (1780, 10629428), (2131, 8878640), (2320, 8155337), (2494, 7586360), (2581, 7330640), (3440, 5500111), (3560, 5314714), (3827, 4943920), (4262, 4439320), (4988, 3793180), (5162, 3665320), (6235, 3034544), (7120, 2657357), (7654, 2471960), (8524, 2219660), (9976, 1896590), (10324, 1832660), (10655, 1775728), (12470, 1517272), (12905, 1466128), (15308, 1235980), (17048, 1109830), (19135, 988784), (19952, 948295), (20648, 916330), (21310, 887864), (24940, 758636), (25810, 733064), (30616, 617990), (34096, 554915), (38270, 494392), (41296, 458165), (42620, 443932), (49880, 379318), (51620, 366532), (61232, 308995), (61799, 306160), (76540, 247196), (85240, 221966), (91633, 206480), (99760, 189659), (103240, 183266), (110983, 170480), (123598, 153080)]