20981760

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{683}}^1$

素因数の和:713

約数の個数: 96

約数和(自身を含む): 67223520

約数和(自身を除く): 46241760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 683, 768, 960, 1024, 1280, 1366, 1536, 1920, 2048, 2049, 2560, 2732, 3072, 3415, 3840, 4098, 5120, 5464, 6144, 6830, 7680, 8196, 10240, 10245, 10928, 13660, 15360, 16392, 20490, 21856, 27320, 30720, 32784, 40980, 43712, 54640, 65568, 81960, 87424, 109280, 131136, 163920, 174848, 218560, 262272, 327840, 349696, 437120, 524544, 655680, 699392, 874240, 1049088, 1311360, 1398784, 1748480, 2098176, 2622720, 3496960, 4196352, 5245440, 6993920, 10490880, 20981760]

約数ペア:

[(1, 20981760), (2, 10490880), (3, 6993920), (4, 5245440), (5, 4196352), (6, 3496960), (8, 2622720), (10, 2098176), (12, 1748480), (15, 1398784), (16, 1311360), (20, 1049088), (24, 874240), (30, 699392), (32, 655680), (40, 524544), (48, 437120), (60, 349696), (64, 327840), (80, 262272), (96, 218560), (120, 174848), (128, 163920), (160, 131136), (192, 109280), (240, 87424), (256, 81960), (320, 65568), (384, 54640), (480, 43712), (512, 40980), (640, 32784), (683, 30720), (768, 27320), (960, 21856), (1024, 20490), (1280, 16392), (1366, 15360), (1536, 13660), (1920, 10928), (2048, 10245), (2049, 10240), (2560, 8196), (2732, 7680), (3072, 6830), (3415, 6144), (3840, 5464), (4098, 5120)]