21000949011

素因数分解:

$3^2\times 7^1\times {\mathrm{349}}^1\times {\mathrm{955153}}^1$

素因数の和:955515

約数の個数: 24

約数和(自身を含む): 34767605600

約数和(自身を除く): 13766656589

約数列:

[1, 3, 7, 9, 21, 63, 349, 1047, 2443, 3141, 7329, 21987, 955153, 2865459, 6686071, 8596377, 20058213, 60174639, 333348397, 1000045191, 2333438779, 3000135573, 7000316337, 21000949011]

約数ペア:

[(1, 21000949011), (3, 7000316337), (7, 3000135573), (9, 2333438779), (21, 1000045191), (63, 333348397), (349, 60174639), (1047, 20058213), (2443, 8596377), (3141, 6686071), (7329, 2865459), (21987, 955153)]