21478236

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1051}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 54434688

約数和(自身を除く): 32956452

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 131, 156, 262, 393, 524, 786, 1051, 1572, 1703, 2102, 3153, 3406, 4204, 5109, 6306, 6812, 10218, 12612, 13663, 20436, 27326, 40989, 54652, 81978, 137681, 163956, 275362, 413043, 550724, 826086, 1652172, 1789853, 3579706, 5369559, 7159412, 10739118, 21478236]

約数ペア:

[(1, 21478236), (2, 10739118), (3, 7159412), (4, 5369559), (6, 3579706), (12, 1789853), (13, 1652172), (26, 826086), (39, 550724), (52, 413043), (78, 275362), (131, 163956), (156, 137681), (262, 81978), (393, 54652), (524, 40989), (786, 27326), (1051, 20436), (1572, 13663), (1703, 12612), (2102, 10218), (3153, 6812), (3406, 6306), (4204, 5109)]