281279120

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{3911}}^1$

素因数の和:3984

約数の個数: 80

約数和(自身を含む): 698526720

約数和(自身を除く): 417247600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 58, 62, 80, 116, 124, 145, 155, 232, 248, 290, 310, 464, 496, 580, 620, 899, 1160, 1240, 1798, 2320, 2480, 3596, 3911, 4495, 7192, 7822, 8990, 14384, 15644, 17980, 19555, 31288, 35960, 39110, 62576, 71920, 78220, 113419, 121241, 156440, 226838, 242482, 312880, 453676, 484964, 567095, 606205, 907352, 969928, 1134190, 1212410, 1814704, 1939856, 2268380, 2424820, 3515989, 4536760, 4849640, 7031978, 9073520, 9699280, 14063956, 17579945, 28127912, 35159890, 56255824, 70319780, 140639560, 281279120]

約数ペア:

[(1, 281279120), (2, 140639560), (4, 70319780), (5, 56255824), (8, 35159890), (10, 28127912), (16, 17579945), (20, 14063956), (29, 9699280), (31, 9073520), (40, 7031978), (58, 4849640), (62, 4536760), (80, 3515989), (116, 2424820), (124, 2268380), (145, 1939856), (155, 1814704), (232, 1212410), (248, 1134190), (290, 969928), (310, 907352), (464, 606205), (496, 567095), (580, 484964), (620, 453676), (899, 312880), (1160, 242482), (1240, 226838), (1798, 156440), (2320, 121241), (2480, 113419), (3596, 78220), (3911, 71920), (4495, 62576), (7192, 39110), (7822, 35960), (8990, 31288), (14384, 19555), (15644, 17980)]