19917952

素因数分解:

$2^7\times {\mathrm{155609}}^1$

素因数の和:155623

約数の個数: 16

約数和(自身を含む): 39680550

約数和(自身を除く): 19762598

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 155609, 311218, 622436, 1244872, 2489744, 4979488, 9958976, 19917952]

約数ペア:

[(1, 19917952), (2, 9958976), (4, 4979488), (8, 2489744), (16, 1244872), (32, 622436), (64, 311218), (128, 155609)]