80437980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{191519}}^1$

素因数の和:191538

約数の個数: 48

約数和(自身を含む): 257402880

約数和(自身を除く): 176964900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 191519, 383038, 574557, 766076, 957595, 1149114, 1340633, 1915190, 2298228, 2681266, 2872785, 3830380, 4021899, 5362532, 5745570, 6703165, 8043798, 11491140, 13406330, 16087596, 20109495, 26812660, 40218990, 80437980]

約数ペア:

[(1, 80437980), (2, 40218990), (3, 26812660), (4, 20109495), (5, 16087596), (6, 13406330), (7, 11491140), (10, 8043798), (12, 6703165), (14, 5745570), (15, 5362532), (20, 4021899), (21, 3830380), (28, 2872785), (30, 2681266), (35, 2298228), (42, 1915190), (60, 1340633), (70, 1149114), (84, 957595), (105, 766076), (140, 574557), (210, 383038), (420, 191519)]