78666280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25541}}^1$

素因数の和:25570

約数の個数: 64

約数和(自身を含む): 220682880

約数和(自身を除く): 142016600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 25541, 51082, 102164, 127705, 178787, 204328, 255410, 280951, 357574, 510820, 561902, 715148, 893935, 1021640, 1123804, 1404755, 1430296, 1787870, 1966657, 2247608, 2809510, 3575740, 3933314, 5619020, 7151480, 7866628, 9833285, 11238040, 15733256, 19666570, 39333140, 78666280]

約数ペア:

[(1, 78666280), (2, 39333140), (4, 19666570), (5, 15733256), (7, 11238040), (8, 9833285), (10, 7866628), (11, 7151480), (14, 5619020), (20, 3933314), (22, 3575740), (28, 2809510), (35, 2247608), (40, 1966657), (44, 1787870), (55, 1430296), (56, 1404755), (70, 1123804), (77, 1021640), (88, 893935), (110, 715148), (140, 561902), (154, 510820), (220, 357574), (280, 280951), (308, 255410), (385, 204328), (440, 178787), (616, 127705), (770, 102164), (1540, 51082), (3080, 25541)]