18481528

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 21838472

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 47, 52, 76, 94, 104, 152, 188, 199, 247, 376, 398, 494, 611, 796, 893, 988, 1222, 1592, 1786, 1976, 2444, 2587, 3572, 3781, 4888, 5174, 7144, 7562, 9353, 10348, 11609, 15124, 18706, 20696, 23218, 30248, 37412, 46436, 49153, 74824, 92872, 98306, 121589, 177707, 196612, 243178, 355414, 393224, 486356, 710828, 972712, 1421656, 2310191, 4620382, 9240764, 18481528]

約数ペア:

[(1, 18481528), (2, 9240764), (4, 4620382), (8, 2310191), (13, 1421656), (19, 972712), (26, 710828), (38, 486356), (47, 393224), (52, 355414), (76, 243178), (94, 196612), (104, 177707), (152, 121589), (188, 98306), (199, 92872), (247, 74824), (376, 49153), (398, 46436), (494, 37412), (611, 30248), (796, 23218), (893, 20696), (988, 18706), (1222, 15124), (1592, 11609), (1786, 10348), (1976, 9353), (2444, 7562), (2587, 7144), (3572, 5174), (3781, 4888)]