20784826804

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2917}}^1\times {\mathrm{8209}}^1$

素因数の和:11168

約数の個数: 48

約数和(自身を含む): 42930549760

約数和(自身を除く): 22145722956

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 2917, 5834, 8209, 11668, 16418, 20419, 32836, 40838, 57463, 81676, 90427, 114926, 180854, 229852, 254479, 361708, 508958, 632989, 1017916, 1265978, 1781353, 2531956, 3562706, 7125412, 23945653, 47891306, 95782612, 167619571, 335239142, 670478284, 742315243, 1484630486, 2969260972, 5196206701, 10392413402, 20784826804]

約数ペア:

[(1, 20784826804), (2, 10392413402), (4, 5196206701), (7, 2969260972), (14, 1484630486), (28, 742315243), (31, 670478284), (62, 335239142), (124, 167619571), (217, 95782612), (434, 47891306), (868, 23945653), (2917, 7125412), (5834, 3562706), (8209, 2531956), (11668, 1781353), (16418, 1265978), (20419, 1017916), (32836, 632989), (40838, 508958), (57463, 361708), (81676, 254479), (90427, 229852), (114926, 180854)]