20921856

素因数分解:

$2^9\times 3^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 80

約数和(自身を含む): 57009744

約数和(自身を除く): 36087888

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 53, 64, 96, 106, 128, 159, 192, 212, 256, 257, 318, 384, 424, 512, 514, 636, 768, 771, 848, 1028, 1272, 1536, 1542, 1696, 2056, 2544, 3084, 3392, 4112, 5088, 6168, 6784, 8224, 10176, 12336, 13568, 13621, 16448, 20352, 24672, 27136, 27242, 32896, 40704, 40863, 49344, 54484, 65792, 81408, 81726, 98688, 108968, 131584, 163452, 197376, 217936, 326904, 394752, 435872, 653808, 871744, 1307616, 1743488, 2615232, 3486976, 5230464, 6973952, 10460928, 20921856]

約数ペア:

[(1, 20921856), (2, 10460928), (3, 6973952), (4, 5230464), (6, 3486976), (8, 2615232), (12, 1743488), (16, 1307616), (24, 871744), (32, 653808), (48, 435872), (53, 394752), (64, 326904), (96, 217936), (106, 197376), (128, 163452), (159, 131584), (192, 108968), (212, 98688), (256, 81726), (257, 81408), (318, 65792), (384, 54484), (424, 49344), (512, 40863), (514, 40704), (636, 32896), (768, 27242), (771, 27136), (848, 24672), (1028, 20352), (1272, 16448), (1536, 13621), (1542, 13568), (1696, 12336), (2056, 10176), (2544, 8224), (3084, 6784), (3392, 6168), (4112, 5088)]