678756080

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{77839}}^1$

素因数の和:77961

約数の個数: 40

約数和(自身を含む): 1592606400

約数和(自身を除く): 913850320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 77839, 155678, 311356, 389195, 622712, 778390, 1245424, 1556780, 3113560, 6227120, 8484451, 16968902, 33937804, 42422255, 67875608, 84844510, 135751216, 169689020, 339378040, 678756080]

約数ペア:

[(1, 678756080), (2, 339378040), (4, 169689020), (5, 135751216), (8, 84844510), (10, 67875608), (16, 42422255), (20, 33937804), (40, 16968902), (80, 8484451), (109, 6227120), (218, 3113560), (436, 1556780), (545, 1245424), (872, 778390), (1090, 622712), (1744, 389195), (2180, 311356), (4360, 155678), (8720, 77839)]