31218880

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1$

素因数の和:223

約数の個数: 168

約数和(自身を含む): 94859856

約数和(自身を除く): 63640976

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 49, 55, 56, 64, 70, 77, 80, 88, 98, 110, 112, 140, 154, 160, 176, 181, 196, 220, 224, 245, 280, 308, 320, 352, 362, 385, 392, 440, 448, 490, 539, 560, 616, 704, 724, 770, 784, 880, 905, 980, 1078, 1120, 1232, 1267, 1448, 1540, 1568, 1760, 1810, 1960, 1991, 2156, 2240, 2464, 2534, 2695, 2896, 3080, 3136, 3520, 3620, 3920, 3982, 4312, 4928, 5068, 5390, 5792, 6160, 6335, 7240, 7840, 7964, 8624, 8869, 9955, 10136, 10780, 11584, 12320, 12670, 13937, 14480, 15680, 15928, 17248, 17738, 19910, 20272, 21560, 24640, 25340, 27874, 28960, 31856, 34496, 35476, 39820, 40544, 43120, 44345, 50680, 55748, 57920, 63712, 69685, 70952, 79640, 81088, 86240, 88690, 97559, 101360, 111496, 127424, 139370, 141904, 159280, 172480, 177380, 195118, 202720, 222992, 278740, 283808, 318560, 354760, 390236, 405440, 445984, 487795, 557480, 567616, 637120, 709520, 780472, 891968, 975590, 1114960, 1419040, 1560944, 1951180, 2229920, 2838080, 3121888, 3902360, 4459840, 6243776, 7804720, 15609440, 31218880]

約数ペア:

[(1, 31218880), (2, 15609440), (4, 7804720), (5, 6243776), (7, 4459840), (8, 3902360), (10, 3121888), (11, 2838080), (14, 2229920), (16, 1951180), (20, 1560944), (22, 1419040), (28, 1114960), (32, 975590), (35, 891968), (40, 780472), (44, 709520), (49, 637120), (55, 567616), (56, 557480), (64, 487795), (70, 445984), (77, 405440), (80, 390236), (88, 354760), (98, 318560), (110, 283808), (112, 278740), (140, 222992), (154, 202720), (160, 195118), (176, 177380), (181, 172480), (196, 159280), (220, 141904), (224, 139370), (245, 127424), (280, 111496), (308, 101360), (320, 97559), (352, 88690), (362, 86240), (385, 81088), (392, 79640), (440, 70952), (448, 69685), (490, 63712), (539, 57920), (560, 55748), (616, 50680), (704, 44345), (724, 43120), (770, 40544), (784, 39820), (880, 35476), (905, 34496), (980, 31856), (1078, 28960), (1120, 27874), (1232, 25340), (1267, 24640), (1448, 21560), (1540, 20272), (1568, 19910), (1760, 17738), (1810, 17248), (1960, 15928), (1991, 15680), (2156, 14480), (2240, 13937), (2464, 12670), (2534, 12320), (2695, 11584), (2896, 10780), (3080, 10136), (3136, 9955), (3520, 8869), (3620, 8624), (3920, 7964), (3982, 7840), (4312, 7240), (4928, 6335), (5068, 6160), (5390, 5792)]