21869965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4259}}^1$

素因数の和:4356

約数の個数: 16

約数和(自身を含む): 28627200

約数和(自身を除く): 6757235

約数列:

[1, 5, 13, 65, 79, 395, 1027, 4259, 5135, 21295, 55367, 276835, 336461, 1682305, 4373993, 21869965]

約数ペア:

[(1, 21869965), (5, 4373993), (13, 1682305), (65, 336461), (79, 276835), (395, 55367), (1027, 21295), (4259, 5135)]