21297156981

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1\times {\mathrm{1061}}^1$

素因数の和:1418

約数の個数: 64

約数和(自身を含む): 31857960960

約数和(自身を除く): 10560803979

約数列:

[1, 3, 19, 23, 57, 61, 69, 183, 251, 437, 753, 1061, 1159, 1311, 1403, 3183, 3477, 4209, 4769, 5773, 14307, 15311, 17319, 20159, 24403, 26657, 45933, 60477, 64721, 73209, 79971, 109687, 194163, 266311, 290909, 329061, 352153, 463657, 798933, 872727, 1056459, 1229699, 1390971, 1488583, 3689097, 4465749, 5059909, 6125153, 6690907, 15179727, 16244971, 18375459, 20072721, 28283077, 48734913, 84849231, 116377907, 308654449, 349133721, 373634333, 925963347, 1120902999, 7099052327, 21297156981]

約数ペア:

[(1, 21297156981), (3, 7099052327), (19, 1120902999), (23, 925963347), (57, 373634333), (61, 349133721), (69, 308654449), (183, 116377907), (251, 84849231), (437, 48734913), (753, 28283077), (1061, 20072721), (1159, 18375459), (1311, 16244971), (1403, 15179727), (3183, 6690907), (3477, 6125153), (4209, 5059909), (4769, 4465749), (5773, 3689097), (14307, 1488583), (15311, 1390971), (17319, 1229699), (20159, 1056459), (24403, 872727), (26657, 798933), (45933, 463657), (60477, 352153), (64721, 329061), (73209, 290909), (79971, 266311), (109687, 194163)]