20017165

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1033

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9842675

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 971, 1085, 2945, 4123, 4855, 6797, 18449, 20615, 30101, 33985, 92245, 129143, 150505, 210707, 571919, 645715, 1053535, 2859595, 4003433, 20017165]

約数ペア:

[(1, 20017165), (5, 4003433), (7, 2859595), (19, 1053535), (31, 645715), (35, 571919), (95, 210707), (133, 150505), (155, 129143), (217, 92245), (589, 33985), (665, 30101), (971, 20615), (1085, 18449), (2945, 6797), (4123, 4855)]