28003640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{971}}^1$

素因数の和:1092

約数の個数: 64

約数和(自身を含む): 72783360

約数和(自身を除く): 44779720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 721, 824, 971, 1030, 1442, 1942, 2060, 2884, 3605, 3884, 4120, 4855, 5768, 6797, 7210, 7768, 9710, 13594, 14420, 19420, 27188, 28840, 33985, 38840, 54376, 67970, 100013, 135940, 200026, 271880, 400052, 500065, 700091, 800104, 1000130, 1400182, 2000260, 2800364, 3500455, 4000520, 5600728, 7000910, 14001820, 28003640]

約数ペア:

[(1, 28003640), (2, 14001820), (4, 7000910), (5, 5600728), (7, 4000520), (8, 3500455), (10, 2800364), (14, 2000260), (20, 1400182), (28, 1000130), (35, 800104), (40, 700091), (56, 500065), (70, 400052), (103, 271880), (140, 200026), (206, 135940), (280, 100013), (412, 67970), (515, 54376), (721, 38840), (824, 33985), (971, 28840), (1030, 27188), (1442, 19420), (1942, 14420), (2060, 13594), (2884, 9710), (3605, 7768), (3884, 7210), (4120, 6797), (4855, 5768)]