31505280

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:352

約数の個数: 128

約数和(自身を含む): 102448800

約数和(自身を除く): 70943520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 128, 160, 183, 192, 240, 244, 269, 305, 320, 366, 384, 480, 488, 538, 610, 640, 732, 807, 915, 960, 976, 1076, 1220, 1345, 1464, 1614, 1830, 1920, 1952, 2152, 2440, 2690, 2928, 3228, 3660, 3904, 4035, 4304, 4880, 5380, 5856, 6456, 7320, 7808, 8070, 8608, 9760, 10760, 11712, 12912, 14640, 16140, 16409, 17216, 19520, 21520, 23424, 25824, 29280, 32280, 32818, 34432, 39040, 43040, 49227, 51648, 58560, 64560, 65636, 82045, 86080, 98454, 103296, 117120, 129120, 131272, 164090, 172160, 196908, 246135, 258240, 262544, 328180, 393816, 492270, 516480, 525088, 656360, 787632, 984540, 1050176, 1312720, 1575264, 1969080, 2100352, 2625440, 3150528, 3938160, 5250880, 6301056, 7876320, 10501760, 15752640, 31505280]

約数ペア:

[(1, 31505280), (2, 15752640), (3, 10501760), (4, 7876320), (5, 6301056), (6, 5250880), (8, 3938160), (10, 3150528), (12, 2625440), (15, 2100352), (16, 1969080), (20, 1575264), (24, 1312720), (30, 1050176), (32, 984540), (40, 787632), (48, 656360), (60, 525088), (61, 516480), (64, 492270), (80, 393816), (96, 328180), (120, 262544), (122, 258240), (128, 246135), (160, 196908), (183, 172160), (192, 164090), (240, 131272), (244, 129120), (269, 117120), (305, 103296), (320, 98454), (366, 86080), (384, 82045), (480, 65636), (488, 64560), (538, 58560), (610, 51648), (640, 49227), (732, 43040), (807, 39040), (915, 34432), (960, 32818), (976, 32280), (1076, 29280), (1220, 25824), (1345, 23424), (1464, 21520), (1614, 19520), (1830, 17216), (1920, 16409), (1952, 16140), (2152, 14640), (2440, 12912), (2690, 11712), (2928, 10760), (3228, 9760), (3660, 8608), (3904, 8070), (4035, 7808), (4304, 7320), (4880, 6456), (5380, 5856)]