255388520

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{28631}}^1$

素因数の和:28865

約数の個数: 32

約数和(自身を含む): 577221120

約数和(自身を除く): 321832600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 28631, 57262, 114524, 143155, 229048, 286310, 572620, 1145240, 6384713, 12769426, 25538852, 31923565, 51077704, 63847130, 127694260, 255388520]

約数ペア:

[(1, 255388520), (2, 127694260), (4, 63847130), (5, 51077704), (8, 31923565), (10, 25538852), (20, 12769426), (40, 6384713), (223, 1145240), (446, 572620), (892, 286310), (1115, 229048), (1784, 143155), (2230, 114524), (4460, 57262), (8920, 28631)]