19860675

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 35792352

約数和(自身を除く): 15931677

約数列:

[1, 3, 5, 15, 17, 25, 37, 51, 75, 85, 111, 185, 255, 421, 425, 555, 629, 925, 1263, 1275, 1887, 2105, 2775, 3145, 6315, 7157, 9435, 10525, 15577, 15725, 21471, 31575, 35785, 46731, 47175, 77885, 107355, 178925, 233655, 264809, 389425, 536775, 794427, 1168275, 1324045, 3972135, 6620225, 19860675]

約数ペア:

[(1, 19860675), (3, 6620225), (5, 3972135), (15, 1324045), (17, 1168275), (25, 794427), (37, 536775), (51, 389425), (75, 264809), (85, 233655), (111, 178925), (185, 107355), (255, 77885), (421, 47175), (425, 46731), (555, 35785), (629, 31575), (925, 21471), (1263, 15725), (1275, 15577), (1887, 10525), (2105, 9435), (2775, 7157), (3145, 6315)]