19979504

素因数分解:

$2^4\times {\mathrm{181}}^1\times {\mathrm{6899}}^1$

素因数の和:7088

約数の個数: 20

約数和(自身を含む): 38929800

約数和(自身を除く): 18950296

約数列:

[1, 2, 4, 8, 16, 181, 362, 724, 1448, 2896, 6899, 13798, 27596, 55192, 110384, 1248719, 2497438, 4994876, 9989752, 19979504]

約数ペア:

[(1, 19979504), (2, 9989752), (4, 4994876), (8, 2497438), (16, 1248719), (181, 110384), (362, 55192), (724, 27596), (1448, 13798), (2896, 6899)]