21251748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{587}}^1$

素因数の和:1032

約数の個数: 48

約数和(自身を含む): 56899584

約数和(自身を除く): 35647836

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 431, 587, 862, 1174, 1293, 1724, 1761, 2348, 2586, 3017, 3522, 4109, 5172, 6034, 7044, 8218, 9051, 12068, 12327, 16436, 18102, 24654, 36204, 49308, 252997, 505994, 758991, 1011988, 1517982, 1770979, 3035964, 3541958, 5312937, 7083916, 10625874, 21251748]

約数ペア:

[(1, 21251748), (2, 10625874), (3, 7083916), (4, 5312937), (6, 3541958), (7, 3035964), (12, 1770979), (14, 1517982), (21, 1011988), (28, 758991), (42, 505994), (84, 252997), (431, 49308), (587, 36204), (862, 24654), (1174, 18102), (1293, 16436), (1724, 12327), (1761, 12068), (2348, 9051), (2586, 8218), (3017, 7044), (3522, 6034), (4109, 5172)]