19401957

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 10838043

約数列:

[1, 3, 9, 27, 29, 71, 87, 213, 261, 349, 639, 783, 1047, 1917, 2059, 3141, 6177, 9423, 10121, 18531, 24779, 30363, 55593, 74337, 91089, 223011, 273267, 669033, 718591, 2155773, 6467319, 19401957]

約数ペア:

[(1, 19401957), (3, 6467319), (9, 2155773), (27, 718591), (29, 669033), (71, 273267), (87, 223011), (213, 91089), (261, 74337), (349, 55593), (639, 30363), (783, 24779), (1047, 18531), (1917, 10121), (2059, 9423), (3141, 6177)]