210980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 556416

約数和(自身を除く): 345436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 137, 140, 154, 220, 274, 308, 385, 548, 685, 770, 959, 1370, 1507, 1540, 1918, 2740, 3014, 3836, 4795, 6028, 7535, 9590, 10549, 15070, 19180, 21098, 30140, 42196, 52745, 105490, 210980]

約数ペア:

[(1, 210980), (2, 105490), (4, 52745), (5, 42196), (7, 30140), (10, 21098), (11, 19180), (14, 15070), (20, 10549), (22, 9590), (28, 7535), (35, 6028), (44, 4795), (55, 3836), (70, 3014), (77, 2740), (110, 1918), (137, 1540), (140, 1507), (154, 1370), (220, 959), (274, 770), (308, 685), (385, 548)]