199919997

素因数分解:

$3^2\times {\mathrm{29}}^2\times {\mathrm{61}}^1\times {\mathrm{433}}^1$

素因数の和:558

約数の個数: 36

約数和(自身を含む): 304679284

約数和(自身を除く): 104759287

約数列:

[1, 3, 9, 29, 61, 87, 183, 261, 433, 549, 841, 1299, 1769, 2523, 3897, 5307, 7569, 12557, 15921, 26413, 37671, 51301, 79239, 113013, 153903, 237717, 364153, 461709, 765977, 1092459, 2297931, 3277377, 6893793, 22213333, 66639999, 199919997]

約数ペア:

[(1, 199919997), (3, 66639999), (9, 22213333), (29, 6893793), (61, 3277377), (87, 2297931), (183, 1092459), (261, 765977), (433, 461709), (549, 364153), (841, 237717), (1299, 153903), (1769, 113013), (2523, 79239), (3897, 51301), (5307, 37671), (7569, 26413), (12557, 15921)]