19802896

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{4931}}^1$

素因数の和:5190

約数の個数: 20

約数和(自身を含む): 38528784

約数和(自身を除く): 18725888

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 4931, 9862, 19724, 39448, 78896, 1237681, 2475362, 4950724, 9901448, 19802896]

約数ペア:

[(1, 19802896), (2, 9901448), (4, 4950724), (8, 2475362), (16, 1237681), (251, 78896), (502, 39448), (1004, 19724), (2008, 9862), (4016, 4931)]