20176695

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1$

素因数の和:682

約数の個数: 80

約数和(自身を含む): 45163008

約数和(自身を除く): 24986313

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 81, 99, 105, 135, 165, 189, 231, 297, 315, 385, 405, 495, 567, 647, 693, 891, 945, 1155, 1485, 1941, 2079, 2835, 3235, 3465, 4455, 4529, 5823, 6237, 7117, 9705, 10395, 13587, 17469, 21351, 22645, 29115, 31185, 35585, 40761, 49819, 52407, 64053, 67935, 87345, 106755, 122283, 149457, 192159, 203805, 249095, 262035, 320265, 366849, 448371, 576477, 611415, 747285, 960795, 1345113, 1834245, 2241855, 2882385, 4035339, 6725565, 20176695]

約数ペア:

[(1, 20176695), (3, 6725565), (5, 4035339), (7, 2882385), (9, 2241855), (11, 1834245), (15, 1345113), (21, 960795), (27, 747285), (33, 611415), (35, 576477), (45, 448371), (55, 366849), (63, 320265), (77, 262035), (81, 249095), (99, 203805), (105, 192159), (135, 149457), (165, 122283), (189, 106755), (231, 87345), (297, 67935), (315, 64053), (385, 52407), (405, 49819), (495, 40761), (567, 35585), (647, 31185), (693, 29115), (891, 22645), (945, 21351), (1155, 17469), (1485, 13587), (1941, 10395), (2079, 9705), (2835, 7117), (3235, 6237), (3465, 5823), (4455, 4529)]