7872865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{13}}^2$

素因数の和:71

約数の個数: 48

約数和(自身を含む): 12859776

約数和(自身を除く): 4986911

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 121, 143, 169, 385, 455, 605, 715, 845, 847, 1001, 1183, 1331, 1573, 1859, 4235, 5005, 5915, 6655, 7865, 9295, 9317, 11011, 13013, 17303, 20449, 46585, 55055, 65065, 86515, 102245, 121121, 143143, 224939, 605605, 715715, 1124695, 1574573, 7872865]

約数ペア:

[(1, 7872865), (5, 1574573), (7, 1124695), (11, 715715), (13, 605605), (35, 224939), (55, 143143), (65, 121121), (77, 102245), (91, 86515), (121, 65065), (143, 55055), (169, 46585), (385, 20449), (455, 17303), (605, 13013), (715, 11011), (845, 9317), (847, 9295), (1001, 7865), (1183, 6655), (1331, 5915), (1573, 5005), (1859, 4235)]