260781921

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{523}}^1\times {\mathrm{3259}}^1$

素因数の和:3805

約数の個数: 24

約数和(自身を含む): 399728160

約数和(自身を除く): 138946239

約数列:

[1, 3, 9, 17, 51, 153, 523, 1569, 3259, 4707, 8891, 9777, 26673, 29331, 55403, 80019, 166209, 498627, 1704457, 5113371, 15340113, 28975769, 86927307, 260781921]

約数ペア:

[(1, 260781921), (3, 86927307), (9, 28975769), (17, 15340113), (51, 5113371), (153, 1704457), (523, 498627), (1569, 166209), (3259, 80019), (4707, 55403), (8891, 29331), (9777, 26673)]