128415672020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{19878587}}^1$

素因数の和:19878632

約数の個数: 48

約数和(自身を含む): 300564250560

約数和(自身を除く): 172148578540

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 6460, 19878587, 39757174, 79514348, 99392935, 198785870, 337935979, 377693153, 397571740, 675871958, 755386306, 1351743916, 1510772612, 1689679895, 1888465765, 3379359790, 3776931530, 6420783601, 6758719580, 7553863060, 12841567202, 25683134404, 32103918005, 64207836010, 128415672020]

約数ペア:

[(1, 128415672020), (2, 64207836010), (4, 32103918005), (5, 25683134404), (10, 12841567202), (17, 7553863060), (19, 6758719580), (20, 6420783601), (34, 3776931530), (38, 3379359790), (68, 1888465765), (76, 1689679895), (85, 1510772612), (95, 1351743916), (170, 755386306), (190, 675871958), (323, 397571740), (340, 377693153), (380, 337935979), (646, 198785870), (1292, 99392935), (1615, 79514348), (3230, 39757174), (6460, 19878587)]