18954260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72901}}^1$

素因数の和:72923

約数の個数: 24

約数和(自身を含む): 42866376

約数和(自身を除く): 23912116

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72901, 145802, 291604, 364505, 729010, 947713, 1458020, 1895426, 3790852, 4738565, 9477130, 18954260]

約数ペア:

[(1, 18954260), (2, 9477130), (4, 4738565), (5, 3790852), (10, 1895426), (13, 1458020), (20, 947713), (26, 729010), (52, 364505), (65, 291604), (130, 145802), (260, 72901)]