18863530

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 39927816

約数和(自身を除く): 21064286

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 137, 245, 274, 281, 490, 562, 685, 959, 1370, 1405, 1918, 1967, 2810, 3934, 4795, 6713, 9590, 9835, 13426, 13769, 19670, 27538, 33565, 38497, 67130, 68845, 76994, 137690, 192485, 269479, 384970, 538958, 1347395, 1886353, 2694790, 3772706, 9431765, 18863530]

約数ペア:

[(1, 18863530), (2, 9431765), (5, 3772706), (7, 2694790), (10, 1886353), (14, 1347395), (35, 538958), (49, 384970), (70, 269479), (98, 192485), (137, 137690), (245, 76994), (274, 68845), (281, 67130), (490, 38497), (562, 33565), (685, 27538), (959, 19670), (1370, 13769), (1405, 13426), (1918, 9835), (1967, 9590), (2810, 6713), (3934, 4795)]