64870400

素因数分解:

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

素因数の和:220

約数の個数: 144

約数和(自身を含む): 184831920

約数和(自身を除く): 119961520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 128, 140, 160, 175, 181, 200, 224, 256, 280, 320, 350, 362, 400, 448, 512, 560, 640, 700, 724, 800, 896, 905, 1024, 1120, 1267, 1280, 1400, 1448, 1600, 1792, 1810, 2048, 2240, 2534, 2560, 2800, 2896, 3200, 3584, 3620, 4480, 4525, 5068, 5120, 5600, 5792, 6335, 6400, 7168, 7240, 8960, 9050, 10136, 10240, 11200, 11584, 12670, 12800, 14336, 14480, 17920, 18100, 20272, 22400, 23168, 25340, 25600, 28960, 31675, 35840, 36200, 40544, 44800, 46336, 50680, 51200, 57920, 63350, 71680, 72400, 81088, 89600, 92672, 101360, 115840, 126700, 144800, 162176, 179200, 185344, 202720, 231680, 253400, 289600, 324352, 358400, 370688, 405440, 463360, 506800, 579200, 648704, 810880, 926720, 1013600, 1158400, 1297408, 1621760, 1853440, 2027200, 2316800, 2594816, 3243520, 4054400, 4633600, 6487040, 8108800, 9267200, 12974080, 16217600, 32435200, 64870400]

約数ペア:

[(1, 64870400), (2, 32435200), (4, 16217600), (5, 12974080), (7, 9267200), (8, 8108800), (10, 6487040), (14, 4633600), (16, 4054400), (20, 3243520), (25, 2594816), (28, 2316800), (32, 2027200), (35, 1853440), (40, 1621760), (50, 1297408), (56, 1158400), (64, 1013600), (70, 926720), (80, 810880), (100, 648704), (112, 579200), (128, 506800), (140, 463360), (160, 405440), (175, 370688), (181, 358400), (200, 324352), (224, 289600), (256, 253400), (280, 231680), (320, 202720), (350, 185344), (362, 179200), (400, 162176), (448, 144800), (512, 126700), (560, 115840), (640, 101360), (700, 92672), (724, 89600), (800, 81088), (896, 72400), (905, 71680), (1024, 63350), (1120, 57920), (1267, 51200), (1280, 50680), (1400, 46336), (1448, 44800), (1600, 40544), (1792, 36200), (1810, 35840), (2048, 31675), (2240, 28960), (2534, 25600), (2560, 25340), (2800, 23168), (2896, 22400), (3200, 20272), (3584, 18100), (3620, 17920), (4480, 14480), (4525, 14336), (5068, 12800), (5120, 12670), (5600, 11584), (5792, 11200), (6335, 10240), (6400, 10136), (7168, 9050), (7240, 8960)]