20002521

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{661}}^1$

素因数の和:813

約数の個数: 32

約数和(自身を含む): 33555456

約数和(自身を除く): 13552935

約数列:

[1, 3, 7, 11, 21, 33, 77, 131, 231, 393, 661, 917, 1441, 1983, 2751, 4323, 4627, 7271, 10087, 13881, 21813, 30261, 50897, 86591, 152691, 259773, 606137, 952501, 1818411, 2857503, 6667507, 20002521]

約数ペア:

[(1, 20002521), (3, 6667507), (7, 2857503), (11, 1818411), (21, 952501), (33, 606137), (77, 259773), (131, 152691), (231, 86591), (393, 50897), (661, 30261), (917, 21813), (1441, 13881), (1983, 10087), (2751, 7271), (4323, 4627)]