18231220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{130223}}^1$

素因数の和:130239

約数の個数: 24

約数和(自身を含む): 43755264

約数和(自身を除く): 25524044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 130223, 260446, 520892, 651115, 911561, 1302230, 1823122, 2604460, 3646244, 4557805, 9115610, 18231220]

約数ペア:

[(1, 18231220), (2, 9115610), (4, 4557805), (5, 3646244), (7, 2604460), (10, 1823122), (14, 1302230), (20, 911561), (28, 651115), (35, 520892), (70, 260446), (140, 130223)]