21136264

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{367}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 41598720

約数和(自身を除く): 20462456

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 313, 367, 626, 734, 1252, 1468, 2504, 2936, 7199, 8441, 14398, 16882, 28796, 33764, 57592, 67528, 114871, 229742, 459484, 918968, 2642033, 5284066, 10568132, 21136264]

約数ペア:

[(1, 21136264), (2, 10568132), (4, 5284066), (8, 2642033), (23, 918968), (46, 459484), (92, 229742), (184, 114871), (313, 67528), (367, 57592), (626, 33764), (734, 28796), (1252, 16882), (1468, 14398), (2504, 8441), (2936, 7199)]