20171979

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4253}}^1$

素因数の和:4307

約数の個数: 24

約数和(自身を含む): 31853952

約数和(自身を除く): 11681973

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4253, 4743, 12759, 38277, 72301, 131843, 216903, 395529, 650709, 1186587, 2241331, 6723993, 20171979]

約数ペア:

[(1, 20171979), (3, 6723993), (9, 2241331), (17, 1186587), (31, 650709), (51, 395529), (93, 216903), (153, 131843), (279, 72301), (527, 38277), (1581, 12759), (4253, 4743)]