20647800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{11471}}^1$

素因数の和:11493

約数の個数: 72

約数和(自身を含む): 69348240

約数和(自身を除く): 48700440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 150, 180, 200, 225, 300, 360, 450, 600, 900, 1800, 11471, 22942, 34413, 45884, 57355, 68826, 91768, 103239, 114710, 137652, 172065, 206478, 229420, 275304, 286775, 344130, 412956, 458840, 516195, 573550, 688260, 825912, 860325, 1032390, 1147100, 1376520, 1720650, 2064780, 2294200, 2580975, 3441300, 4129560, 5161950, 6882600, 10323900, 20647800]

約数ペア:

[(1, 20647800), (2, 10323900), (3, 6882600), (4, 5161950), (5, 4129560), (6, 3441300), (8, 2580975), (9, 2294200), (10, 2064780), (12, 1720650), (15, 1376520), (18, 1147100), (20, 1032390), (24, 860325), (25, 825912), (30, 688260), (36, 573550), (40, 516195), (45, 458840), (50, 412956), (60, 344130), (72, 286775), (75, 275304), (90, 229420), (100, 206478), (120, 172065), (150, 137652), (180, 114710), (200, 103239), (225, 91768), (300, 68826), (360, 57355), (450, 45884), (600, 34413), (900, 22942), (1800, 11471)]