20578572

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{643}}^1$

素因数の和:787

約数の個数: 72

約数和(自身を含む): 60010496

約数和(自身を除く): 39431924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 127, 252, 254, 381, 508, 643, 762, 889, 1143, 1286, 1524, 1778, 1929, 2286, 2572, 2667, 3556, 3858, 4501, 4572, 5334, 5787, 7716, 8001, 9002, 10668, 11574, 13503, 16002, 18004, 23148, 27006, 32004, 40509, 54012, 81018, 81661, 162036, 163322, 244983, 326644, 489966, 571627, 734949, 979932, 1143254, 1469898, 1714881, 2286508, 2939796, 3429762, 5144643, 6859524, 10289286, 20578572]

約数ペア:

[(1, 20578572), (2, 10289286), (3, 6859524), (4, 5144643), (6, 3429762), (7, 2939796), (9, 2286508), (12, 1714881), (14, 1469898), (18, 1143254), (21, 979932), (28, 734949), (36, 571627), (42, 489966), (63, 326644), (84, 244983), (126, 163322), (127, 162036), (252, 81661), (254, 81018), (381, 54012), (508, 40509), (643, 32004), (762, 27006), (889, 23148), (1143, 18004), (1286, 16002), (1524, 13503), (1778, 11574), (1929, 10668), (2286, 9002), (2572, 8001), (2667, 7716), (3556, 5787), (3858, 5334), (4501, 4572)]