20952585

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 39171600

約数和(自身を除く): 18219015

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 61, 85, 153, 183, 255, 305, 449, 549, 765, 915, 1037, 1347, 2245, 2745, 3111, 4041, 5185, 6735, 7633, 9333, 15555, 20205, 22899, 27389, 38165, 46665, 68697, 82167, 114495, 136945, 246501, 343485, 410835, 465613, 1232505, 1396839, 2328065, 4190517, 6984195, 20952585]

約数ペア:

[(1, 20952585), (3, 6984195), (5, 4190517), (9, 2328065), (15, 1396839), (17, 1232505), (45, 465613), (51, 410835), (61, 343485), (85, 246501), (153, 136945), (183, 114495), (255, 82167), (305, 68697), (449, 46665), (549, 38165), (765, 27389), (915, 22899), (1037, 20205), (1347, 15555), (2245, 9333), (2745, 7633), (3111, 6735), (4041, 5185)]