257851890

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{487}}^1$

素因数の和:593

約数の個数: 128

約数和(自身を含む): 720990720

約数和(自身を除く): 463138830

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 53, 54, 74, 90, 106, 111, 135, 159, 185, 222, 265, 270, 318, 333, 370, 477, 487, 530, 555, 666, 795, 954, 974, 999, 1110, 1431, 1461, 1590, 1665, 1961, 1998, 2385, 2435, 2862, 2922, 3330, 3922, 4383, 4770, 4870, 4995, 5883, 7155, 7305, 8766, 9805, 9990, 11766, 13149, 14310, 14610, 17649, 18019, 19610, 21915, 25811, 26298, 29415, 35298, 36038, 43830, 51622, 52947, 54057, 58830, 65745, 77433, 88245, 90095, 105894, 108114, 129055, 131490, 154866, 162171, 176490, 180190, 232299, 258110, 264735, 270285, 324342, 387165, 464598, 486513, 529470, 540570, 696897, 774330, 810855, 955007, 973026, 1161495, 1393794, 1621710, 1910014, 2322990, 2432565, 2865021, 3484485, 4775035, 4865130, 5730042, 6968970, 8595063, 9550070, 14325105, 17190126, 25785189, 28650210, 42975315, 51570378, 85950630, 128925945, 257851890]

約数ペア:

[(1, 257851890), (2, 128925945), (3, 85950630), (5, 51570378), (6, 42975315), (9, 28650210), (10, 25785189), (15, 17190126), (18, 14325105), (27, 9550070), (30, 8595063), (37, 6968970), (45, 5730042), (53, 4865130), (54, 4775035), (74, 3484485), (90, 2865021), (106, 2432565), (111, 2322990), (135, 1910014), (159, 1621710), (185, 1393794), (222, 1161495), (265, 973026), (270, 955007), (318, 810855), (333, 774330), (370, 696897), (477, 540570), (487, 529470), (530, 486513), (555, 464598), (666, 387165), (795, 324342), (954, 270285), (974, 264735), (999, 258110), (1110, 232299), (1431, 180190), (1461, 176490), (1590, 162171), (1665, 154866), (1961, 131490), (1998, 129055), (2385, 108114), (2435, 105894), (2862, 90095), (2922, 88245), (3330, 77433), (3922, 65745), (4383, 58830), (4770, 54057), (4870, 52947), (4995, 51622), (5883, 43830), (7155, 36038), (7305, 35298), (8766, 29415), (9805, 26298), (9990, 25811), (11766, 21915), (13149, 19610), (14310, 18019), (14610, 17649)]