20169981

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:270

約数の個数: 36

約数和(自身を含む): 32116500

約数和(自身を除く): 11946519

約数列:

[1, 3, 9, 13, 39, 89, 117, 149, 169, 267, 447, 507, 801, 1157, 1341, 1521, 1937, 3471, 5811, 10413, 13261, 15041, 17433, 25181, 39783, 45123, 75543, 119349, 135369, 172393, 226629, 517179, 1551537, 2241109, 6723327, 20169981]

約数ペア:

[(1, 20169981), (3, 6723327), (9, 2241109), (13, 1551537), (39, 517179), (89, 226629), (117, 172393), (149, 135369), (169, 119349), (267, 75543), (447, 45123), (507, 39783), (801, 25181), (1157, 17433), (1341, 15041), (1521, 13261), (1937, 10413), (3471, 5811)]