28687904

素因数分解:

$2^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1439}}^1$

素因数の和:1545

約数の個数: 48

約数和(自身を含む): 65318400

約数和(自身を除く): 36630496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 89, 112, 178, 224, 356, 623, 712, 1246, 1424, 1439, 2492, 2848, 2878, 4984, 5756, 9968, 10073, 11512, 19936, 20146, 23024, 40292, 46048, 80584, 128071, 161168, 256142, 322336, 512284, 896497, 1024568, 1792994, 2049136, 3585988, 4098272, 7171976, 14343952, 28687904]

約数ペア:

[(1, 28687904), (2, 14343952), (4, 7171976), (7, 4098272), (8, 3585988), (14, 2049136), (16, 1792994), (28, 1024568), (32, 896497), (56, 512284), (89, 322336), (112, 256142), (178, 161168), (224, 128071), (356, 80584), (623, 46048), (712, 40292), (1246, 23024), (1424, 20146), (1439, 19936), (2492, 11512), (2848, 10073), (2878, 9968), (4984, 5756)]