20280645

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1951}}^1$

素因数の和:1983

約数の個数: 64

約数和(自身を含む): 44974080

約数和(自身を除く): 24693435

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 99, 105, 135, 165, 189, 231, 297, 315, 385, 495, 693, 945, 1155, 1485, 1951, 2079, 3465, 5853, 9755, 10395, 13657, 17559, 21461, 29265, 40971, 52677, 64383, 68285, 87795, 107305, 122913, 150227, 193149, 204855, 263385, 321915, 368739, 450681, 579447, 614565, 751135, 965745, 1352043, 1843695, 2253405, 2897235, 4056129, 6760215, 20280645]

約数ペア:

[(1, 20280645), (3, 6760215), (5, 4056129), (7, 2897235), (9, 2253405), (11, 1843695), (15, 1352043), (21, 965745), (27, 751135), (33, 614565), (35, 579447), (45, 450681), (55, 368739), (63, 321915), (77, 263385), (99, 204855), (105, 193149), (135, 150227), (165, 122913), (189, 107305), (231, 87795), (297, 68285), (315, 64383), (385, 52677), (495, 40971), (693, 29265), (945, 21461), (1155, 17559), (1485, 13657), (1951, 10395), (2079, 9755), (3465, 5853)]