19778992

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{39877}}^1$

素因数の和:39916

約数の個数: 20

約数和(自身を含む): 39558976

約数和(自身を除く): 19779984

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 39877, 79754, 159508, 319016, 638032, 1236187, 2472374, 4944748, 9889496, 19778992]

約数ペア:

[(1, 19778992), (2, 9889496), (4, 4944748), (8, 2472374), (16, 1236187), (31, 638032), (62, 319016), (124, 159508), (248, 79754), (496, 39877)]