90818560

素因数分解:

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

素因数の和:222

約数の個数: 144

約数和(自身を含む): 254889180

約数和(自身を除く): 164070620

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 181, 196, 224, 245, 256, 280, 320, 362, 392, 448, 490, 512, 560, 640, 724, 784, 896, 905, 980, 1024, 1120, 1267, 1280, 1448, 1568, 1792, 1810, 1960, 2048, 2240, 2534, 2560, 2896, 3136, 3584, 3620, 3920, 4480, 5068, 5120, 5792, 6272, 6335, 7168, 7240, 7840, 8869, 8960, 10136, 10240, 11584, 12544, 12670, 14336, 14480, 15680, 17738, 17920, 20272, 23168, 25088, 25340, 28960, 31360, 35476, 35840, 40544, 44345, 46336, 50176, 50680, 57920, 62720, 70952, 71680, 81088, 88690, 92672, 100352, 101360, 115840, 125440, 141904, 162176, 177380, 185344, 202720, 231680, 250880, 283808, 324352, 354760, 370688, 405440, 463360, 501760, 567616, 648704, 709520, 810880, 926720, 1135232, 1297408, 1419040, 1621760, 1853440, 2270464, 2594816, 2838080, 3243520, 4540928, 5676160, 6487040, 9081856, 11352320, 12974080, 18163712, 22704640, 45409280, 90818560]

約数ペア:

[(1, 90818560), (2, 45409280), (4, 22704640), (5, 18163712), (7, 12974080), (8, 11352320), (10, 9081856), (14, 6487040), (16, 5676160), (20, 4540928), (28, 3243520), (32, 2838080), (35, 2594816), (40, 2270464), (49, 1853440), (56, 1621760), (64, 1419040), (70, 1297408), (80, 1135232), (98, 926720), (112, 810880), (128, 709520), (140, 648704), (160, 567616), (181, 501760), (196, 463360), (224, 405440), (245, 370688), (256, 354760), (280, 324352), (320, 283808), (362, 250880), (392, 231680), (448, 202720), (490, 185344), (512, 177380), (560, 162176), (640, 141904), (724, 125440), (784, 115840), (896, 101360), (905, 100352), (980, 92672), (1024, 88690), (1120, 81088), (1267, 71680), (1280, 70952), (1448, 62720), (1568, 57920), (1792, 50680), (1810, 50176), (1960, 46336), (2048, 44345), (2240, 40544), (2534, 35840), (2560, 35476), (2896, 31360), (3136, 28960), (3584, 25340), (3620, 25088), (3920, 23168), (4480, 20272), (5068, 17920), (5120, 17738), (5792, 15680), (6272, 14480), (6335, 14336), (7168, 12670), (7240, 12544), (7840, 11584), (8869, 10240), (8960, 10136)]