421960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 1192320

約数和(自身を除く): 770360

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 137, 140, 154, 220, 274, 280, 308, 385, 440, 548, 616, 685, 770, 959, 1096, 1370, 1507, 1540, 1918, 2740, 3014, 3080, 3836, 4795, 5480, 6028, 7535, 7672, 9590, 10549, 12056, 15070, 19180, 21098, 30140, 38360, 42196, 52745, 60280, 84392, 105490, 210980, 421960]

約数ペア:

[(1, 421960), (2, 210980), (4, 105490), (5, 84392), (7, 60280), (8, 52745), (10, 42196), (11, 38360), (14, 30140), (20, 21098), (22, 19180), (28, 15070), (35, 12056), (40, 10549), (44, 9590), (55, 7672), (56, 7535), (70, 6028), (77, 5480), (88, 4795), (110, 3836), (137, 3080), (140, 3014), (154, 2740), (220, 1918), (274, 1540), (280, 1507), (308, 1370), (385, 1096), (440, 959), (548, 770), (616, 685)]