20215800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{1021}}^1$

素因数の和:1054

約数の個数: 144

約数和(自身を含む): 74135880

約数和(自身を除く): 53920080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 25, 30, 33, 36, 40, 44, 45, 50, 55, 60, 66, 72, 75, 88, 90, 99, 100, 110, 120, 132, 150, 165, 180, 198, 200, 220, 225, 264, 275, 300, 330, 360, 396, 440, 450, 495, 550, 600, 660, 792, 825, 900, 990, 1021, 1100, 1320, 1650, 1800, 1980, 2042, 2200, 2475, 3063, 3300, 3960, 4084, 4950, 5105, 6126, 6600, 8168, 9189, 9900, 10210, 11231, 12252, 15315, 18378, 19800, 20420, 22462, 24504, 25525, 30630, 33693, 36756, 40840, 44924, 45945, 51050, 56155, 61260, 67386, 73512, 76575, 89848, 91890, 101079, 102100, 112310, 122520, 134772, 153150, 168465, 183780, 202158, 204200, 224620, 229725, 269544, 280775, 306300, 336930, 367560, 404316, 449240, 459450, 505395, 561550, 612600, 673860, 808632, 842325, 918900, 1010790, 1123100, 1347720, 1684650, 1837800, 2021580, 2246200, 2526975, 3369300, 4043160, 5053950, 6738600, 10107900, 20215800]

約数ペア:

[(1, 20215800), (2, 10107900), (3, 6738600), (4, 5053950), (5, 4043160), (6, 3369300), (8, 2526975), (9, 2246200), (10, 2021580), (11, 1837800), (12, 1684650), (15, 1347720), (18, 1123100), (20, 1010790), (22, 918900), (24, 842325), (25, 808632), (30, 673860), (33, 612600), (36, 561550), (40, 505395), (44, 459450), (45, 449240), (50, 404316), (55, 367560), (60, 336930), (66, 306300), (72, 280775), (75, 269544), (88, 229725), (90, 224620), (99, 204200), (100, 202158), (110, 183780), (120, 168465), (132, 153150), (150, 134772), (165, 122520), (180, 112310), (198, 102100), (200, 101079), (220, 91890), (225, 89848), (264, 76575), (275, 73512), (300, 67386), (330, 61260), (360, 56155), (396, 51050), (440, 45945), (450, 44924), (495, 40840), (550, 36756), (600, 33693), (660, 30630), (792, 25525), (825, 24504), (900, 22462), (990, 20420), (1021, 19800), (1100, 18378), (1320, 15315), (1650, 12252), (1800, 11231), (1980, 10210), (2042, 9900), (2200, 9189), (2475, 8168), (3063, 6600), (3300, 6126), (3960, 5105), (4084, 4950)]