15920415

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1029

約数の個数: 64

約数和(自身を含む): 34283520

約数和(自身を除く): 18363105

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 991, 1071, 1785, 2295, 2973, 3213, 4955, 5355, 6937, 8919, 14865, 16065, 16847, 20811, 26757, 34685, 44595, 50541, 62433, 84235, 104055, 117929, 133785, 151623, 187299, 252705, 312165, 353787, 454869, 589645, 758115, 936495, 1061361, 1768935, 2274345, 3184083, 5306805, 15920415]

約数ペア:

[(1, 15920415), (3, 5306805), (5, 3184083), (7, 2274345), (9, 1768935), (15, 1061361), (17, 936495), (21, 758115), (27, 589645), (35, 454869), (45, 353787), (51, 312165), (63, 252705), (85, 187299), (105, 151623), (119, 133785), (135, 117929), (153, 104055), (189, 84235), (255, 62433), (315, 50541), (357, 44595), (459, 34685), (595, 26757), (765, 20811), (945, 16847), (991, 16065), (1071, 14865), (1785, 8919), (2295, 6937), (2973, 5355), (3213, 4955)]