20284485

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 38465280

約数和(自身を除く): 18180795

約数列:

[1, 3, 5, 13, 15, 17, 29, 39, 51, 65, 85, 87, 145, 195, 211, 221, 255, 377, 435, 493, 633, 663, 1055, 1105, 1131, 1479, 1885, 2465, 2743, 3165, 3315, 3587, 5655, 6119, 6409, 7395, 8229, 10761, 13715, 17935, 18357, 19227, 30595, 32045, 41145, 46631, 53805, 79547, 91785, 96135, 104023, 139893, 233155, 238641, 312069, 397735, 520115, 699465, 1193205, 1352299, 1560345, 4056897, 6761495, 20284485]

約数ペア:

[(1, 20284485), (3, 6761495), (5, 4056897), (13, 1560345), (15, 1352299), (17, 1193205), (29, 699465), (39, 520115), (51, 397735), (65, 312069), (85, 238641), (87, 233155), (145, 139893), (195, 104023), (211, 96135), (221, 91785), (255, 79547), (377, 53805), (435, 46631), (493, 41145), (633, 32045), (663, 30595), (1055, 19227), (1105, 18357), (1131, 17935), (1479, 13715), (1885, 10761), (2465, 8229), (2743, 7395), (3165, 6409), (3315, 6119), (3587, 5655)]