19398560

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3911}}^1$

素因数の和:3957

約数の個数: 48

約数和(自身を含む): 47319552

約数和(自身を除く): 27920992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 3911, 4960, 7822, 15644, 19555, 31288, 39110, 62576, 78220, 121241, 125152, 156440, 242482, 312880, 484964, 606205, 625760, 969928, 1212410, 1939856, 2424820, 3879712, 4849640, 9699280, 19398560]

約数ペア:

[(1, 19398560), (2, 9699280), (4, 4849640), (5, 3879712), (8, 2424820), (10, 1939856), (16, 1212410), (20, 969928), (31, 625760), (32, 606205), (40, 484964), (62, 312880), (80, 242482), (124, 156440), (155, 125152), (160, 121241), (248, 78220), (310, 62576), (496, 39110), (620, 31288), (992, 19555), (1240, 15644), (2480, 7822), (3911, 4960)]