19788320

素因数分解:

$2^5\times 5^1\times {\mathrm{123677}}^1$

素因数の和:123692

約数の個数: 24

約数和(自身を含む): 46750284

約数和(自身を除く): 26961964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123677, 247354, 494708, 618385, 989416, 1236770, 1978832, 2473540, 3957664, 4947080, 9894160, 19788320]

約数ペア:

[(1, 19788320), (2, 9894160), (4, 4947080), (5, 3957664), (8, 2473540), (10, 1978832), (16, 1236770), (20, 989416), (32, 618385), (40, 494708), (80, 247354), (160, 123677)]