20847645

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1697}}^1$

素因数の和:1731

約数の個数: 64

約数和(自身を含む): 45642240

約数和(自身を除く): 24794595

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1697, 1755, 2457, 4095, 5091, 8485, 11879, 12285, 15273, 22061, 25455, 35637, 45819, 59395, 66183, 76365, 106911, 110305, 154427, 178185, 198549, 229095, 320733, 330915, 463281, 534555, 595647, 772135, 992745, 1389843, 1603665, 2316405, 2978235, 4169529, 6949215, 20847645]

約数ペア:

[(1, 20847645), (3, 6949215), (5, 4169529), (7, 2978235), (9, 2316405), (13, 1603665), (15, 1389843), (21, 992745), (27, 772135), (35, 595647), (39, 534555), (45, 463281), (63, 330915), (65, 320733), (91, 229095), (105, 198549), (117, 178185), (135, 154427), (189, 110305), (195, 106911), (273, 76365), (315, 66183), (351, 59395), (455, 45819), (585, 35637), (819, 25455), (945, 22061), (1365, 15273), (1697, 12285), (1755, 11879), (2457, 8485), (4095, 5091)]