16400979

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 28753920

約数和(自身を除く): 12352941

約数列:

[1, 3, 7, 9, 21, 29, 47, 63, 87, 141, 191, 203, 261, 329, 423, 573, 609, 987, 1337, 1363, 1719, 1827, 2961, 4011, 4089, 5539, 8977, 9541, 12033, 12267, 16617, 26931, 28623, 38773, 49851, 62839, 80793, 85869, 116319, 188517, 260333, 348957, 565551, 780999, 1822331, 2342997, 5466993, 16400979]

約数ペア:

[(1, 16400979), (3, 5466993), (7, 2342997), (9, 1822331), (21, 780999), (29, 565551), (47, 348957), (63, 260333), (87, 188517), (141, 116319), (191, 85869), (203, 80793), (261, 62839), (329, 49851), (423, 38773), (573, 28623), (609, 26931), (987, 16617), (1337, 12267), (1363, 12033), (1719, 9541), (1827, 8977), (2961, 5539), (4011, 4089)]