678733460

素因数分解:

$2^2\times 5^1\times {\mathrm{4357}}^1\times {\mathrm{7789}}^1$

素因数の和:12155

約数の個数: 24

約数和(自身を含む): 1425850440

約数和(自身を除く): 747116980

約数列:

[1, 2, 4, 5, 10, 20, 4357, 7789, 8714, 15578, 17428, 21785, 31156, 38945, 43570, 77890, 87140, 155780, 33936673, 67873346, 135746692, 169683365, 339366730, 678733460]

約数ペア:

[(1, 678733460), (2, 339366730), (4, 169683365), (5, 135746692), (10, 67873346), (20, 33936673), (4357, 155780), (7789, 87140), (8714, 77890), (15578, 43570), (17428, 38945), (21785, 31156)]