390077960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{2477}}^1$

素因数の和:2646

約数の個数: 64

約数和(自身を含む): 913489920

約数和(自身を除く): 523411960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 248, 254, 310, 508, 620, 635, 1016, 1240, 1270, 2477, 2540, 3937, 4954, 5080, 7874, 9908, 12385, 15748, 19685, 19816, 24770, 31496, 39370, 49540, 76787, 78740, 99080, 153574, 157480, 307148, 314579, 383935, 614296, 629158, 767870, 1258316, 1535740, 1572895, 2516632, 3071480, 3145790, 6291580, 9751949, 12583160, 19503898, 39007796, 48759745, 78015592, 97519490, 195038980, 390077960]

約数ペア:

[(1, 390077960), (2, 195038980), (4, 97519490), (5, 78015592), (8, 48759745), (10, 39007796), (20, 19503898), (31, 12583160), (40, 9751949), (62, 6291580), (124, 3145790), (127, 3071480), (155, 2516632), (248, 1572895), (254, 1535740), (310, 1258316), (508, 767870), (620, 629158), (635, 614296), (1016, 383935), (1240, 314579), (1270, 307148), (2477, 157480), (2540, 153574), (3937, 99080), (4954, 78740), (5080, 76787), (7874, 49540), (9908, 39370), (12385, 31496), (15748, 24770), (19685, 19816)]