28904260

素因数分解:

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

素因数の和:301

約数の個数: 72

約数和(自身を含む): 76233024

約数和(自身を除く): 47328764

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, 18769, 19180, 21098, 30140, 37538, 42196, 52745, 75076, 93845, 105490, 131383, 187690, 206459, 210980, 262766, 375380, 412918, 525532, 656915, 825836, 1032295, 1313830, 1445213, 2064590, 2627660, 2890426, 4129180, 5780852, 7226065, 14452130, 28904260]

約数ペア:

[(1, 28904260), (2, 14452130), (4, 7226065), (5, 5780852), (7, 4129180), (10, 2890426), (11, 2627660), (14, 2064590), (20, 1445213), (22, 1313830), (28, 1032295), (35, 825836), (44, 656915), (55, 525532), (70, 412918), (77, 375380), (110, 262766), (137, 210980), (140, 206459), (154, 187690), (220, 131383), (274, 105490), (308, 93845), (385, 75076), (548, 52745), (685, 42196), (770, 37538), (959, 30140), (1370, 21098), (1507, 19180), (1540, 18769), (1918, 15070), (2740, 10549), (3014, 9590), (3836, 7535), (4795, 6028)]