21000971709

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{653}}^1\times {\mathrm{70067}}^1$

素因数の和:70746

約数の個数: 32

約数和(自身を含む): 32993619840

約数和(自身を除く): 11992648131

約数列:

[1, 3, 9, 17, 27, 51, 153, 459, 653, 1959, 5877, 11101, 17631, 33303, 70067, 99909, 210201, 299727, 630603, 1191139, 1891809, 3573417, 10720251, 32160753, 45753751, 137261253, 411783759, 777813767, 1235351277, 2333441301, 7000323903, 21000971709]

約数ペア:

[(1, 21000971709), (3, 7000323903), (9, 2333441301), (17, 1235351277), (27, 777813767), (51, 411783759), (153, 137261253), (459, 45753751), (653, 32160753), (1959, 10720251), (5877, 3573417), (11101, 1891809), (17631, 1191139), (33303, 630603), (70067, 299727), (99909, 210201)]