19926800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1607}}^1$

素因数の和:1656

約数の個数: 60

約数和(自身を含む): 49449216

約数和(自身を除く): 29522416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1607, 2480, 3100, 3214, 6200, 6428, 8035, 12400, 12856, 16070, 25712, 32140, 40175, 49817, 64280, 80350, 99634, 128560, 160700, 199268, 249085, 321400, 398536, 498170, 642800, 797072, 996340, 1245425, 1992680, 2490850, 3985360, 4981700, 9963400, 19926800]

約数ペア:

[(1, 19926800), (2, 9963400), (4, 4981700), (5, 3985360), (8, 2490850), (10, 1992680), (16, 1245425), (20, 996340), (25, 797072), (31, 642800), (40, 498170), (50, 398536), (62, 321400), (80, 249085), (100, 199268), (124, 160700), (155, 128560), (200, 99634), (248, 80350), (310, 64280), (400, 49817), (496, 40175), (620, 32140), (775, 25712), (1240, 16070), (1550, 12856), (1607, 12400), (2480, 8035), (3100, 6428), (3214, 6200)]