20709675

素因数分解:

$3^5\times 5^2\times 7^1\times {\mathrm{487}}^1$

素因数の和:519

約数の個数: 72

約数和(自身を含む): 44052736

約数和(自身を除く): 23343061

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 243, 315, 405, 487, 525, 567, 675, 945, 1215, 1461, 1575, 1701, 2025, 2435, 2835, 3409, 4383, 4725, 6075, 7305, 8505, 10227, 12175, 13149, 14175, 17045, 21915, 30681, 36525, 39447, 42525, 51135, 65745, 85225, 92043, 109575, 118341, 153405, 197235, 255675, 276129, 328725, 460215, 591705, 767025, 828387, 986175, 1380645, 2301075, 2958525, 4141935, 6903225, 20709675]

約数ペア:

[(1, 20709675), (3, 6903225), (5, 4141935), (7, 2958525), (9, 2301075), (15, 1380645), (21, 986175), (25, 828387), (27, 767025), (35, 591705), (45, 460215), (63, 328725), (75, 276129), (81, 255675), (105, 197235), (135, 153405), (175, 118341), (189, 109575), (225, 92043), (243, 85225), (315, 65745), (405, 51135), (487, 42525), (525, 39447), (567, 36525), (675, 30681), (945, 21915), (1215, 17045), (1461, 14175), (1575, 13149), (1701, 12175), (2025, 10227), (2435, 8505), (2835, 7305), (3409, 6075), (4383, 4725)]