254999720

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{10103}}^1$

素因数の和:10745

約数の個数: 32

約数和(自身を含む): 574715520

約数和(自身を除く): 319715800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 1262, 2524, 3155, 5048, 6310, 10103, 12620, 20206, 25240, 40412, 50515, 80824, 101030, 202060, 404120, 6374993, 12749986, 25499972, 31874965, 50999944, 63749930, 127499860, 254999720]

約数ペア:

[(1, 254999720), (2, 127499860), (4, 63749930), (5, 50999944), (8, 31874965), (10, 25499972), (20, 12749986), (40, 6374993), (631, 404120), (1262, 202060), (2524, 101030), (3155, 80824), (5048, 50515), (6310, 40412), (10103, 25240), (12620, 20206)]