20511720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{251}}^1$

素因数の和:495

約数の個数: 96

約数和(自身を含む): 67223520

約数和(自身を除く): 46711800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 227, 251, 360, 454, 502, 681, 753, 908, 1004, 1135, 1255, 1362, 1506, 1816, 2008, 2043, 2259, 2270, 2510, 2724, 3012, 3405, 3765, 4086, 4518, 4540, 5020, 5448, 6024, 6810, 7530, 8172, 9036, 9080, 10040, 10215, 11295, 13620, 15060, 16344, 18072, 20430, 22590, 27240, 30120, 40860, 45180, 56977, 81720, 90360, 113954, 170931, 227908, 284885, 341862, 455816, 512793, 569770, 683724, 854655, 1025586, 1139540, 1367448, 1709310, 2051172, 2279080, 2563965, 3418620, 4102344, 5127930, 6837240, 10255860, 20511720]

約数ペア:

[(1, 20511720), (2, 10255860), (3, 6837240), (4, 5127930), (5, 4102344), (6, 3418620), (8, 2563965), (9, 2279080), (10, 2051172), (12, 1709310), (15, 1367448), (18, 1139540), (20, 1025586), (24, 854655), (30, 683724), (36, 569770), (40, 512793), (45, 455816), (60, 341862), (72, 284885), (90, 227908), (120, 170931), (180, 113954), (227, 90360), (251, 81720), (360, 56977), (454, 45180), (502, 40860), (681, 30120), (753, 27240), (908, 22590), (1004, 20430), (1135, 18072), (1255, 16344), (1362, 15060), (1506, 13620), (1816, 11295), (2008, 10215), (2043, 10040), (2259, 9080), (2270, 9036), (2510, 8172), (2724, 7530), (3012, 6810), (3405, 6024), (3765, 5448), (4086, 5020), (4518, 4540)]