21168945

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 46126080

約数和(自身を除く): 24957135

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 81, 95, 105, 131, 133, 135, 171, 189, 243, 285, 315, 393, 399, 405, 513, 567, 655, 665, 855, 917, 945, 1179, 1197, 1215, 1539, 1701, 1965, 1995, 2489, 2565, 2751, 2835, 3537, 3591, 4585, 4617, 5895, 5985, 7467, 7695, 8253, 8505, 10611, 10773, 12445, 13755, 17423, 17685, 17955, 22401, 23085, 24759, 31833, 32319, 37335, 41265, 52269, 53055, 53865, 67203, 74277, 87115, 112005, 123795, 156807, 159165, 161595, 201609, 222831, 261345, 336015, 371385, 470421, 604827, 784035, 1008045, 1114155, 1411263, 2352105, 3024135, 4233789, 7056315, 21168945]

約数ペア:

[(1, 21168945), (3, 7056315), (5, 4233789), (7, 3024135), (9, 2352105), (15, 1411263), (19, 1114155), (21, 1008045), (27, 784035), (35, 604827), (45, 470421), (57, 371385), (63, 336015), (81, 261345), (95, 222831), (105, 201609), (131, 161595), (133, 159165), (135, 156807), (171, 123795), (189, 112005), (243, 87115), (285, 74277), (315, 67203), (393, 53865), (399, 53055), (405, 52269), (513, 41265), (567, 37335), (655, 32319), (665, 31833), (855, 24759), (917, 23085), (945, 22401), (1179, 17955), (1197, 17685), (1215, 17423), (1539, 13755), (1701, 12445), (1965, 10773), (1995, 10611), (2489, 8505), (2565, 8253), (2751, 7695), (2835, 7467), (3537, 5985), (3591, 5895), (4585, 4617)]