18917175

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 34096032

約数和(自身を除く): 15178857

約数列:

[1, 3, 5, 15, 17, 25, 37, 51, 75, 85, 111, 185, 255, 401, 425, 555, 629, 925, 1203, 1275, 1887, 2005, 2775, 3145, 6015, 6817, 9435, 10025, 14837, 15725, 20451, 30075, 34085, 44511, 47175, 74185, 102255, 170425, 222555, 252229, 370925, 511275, 756687, 1112775, 1261145, 3783435, 6305725, 18917175]

約数ペア:

[(1, 18917175), (3, 6305725), (5, 3783435), (15, 1261145), (17, 1112775), (25, 756687), (37, 511275), (51, 370925), (75, 252229), (85, 222555), (111, 170425), (185, 102255), (255, 74185), (401, 47175), (425, 44511), (555, 34085), (629, 30075), (925, 20451), (1203, 15725), (1275, 14837), (1887, 10025), (2005, 9435), (2775, 6817), (3145, 6015)]