20480400

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{5689}}^1$

素因数の和:5713

約数の個数: 90

約数和(自身を含む): 71085170

約数和(自身を除く): 50604770

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 144, 150, 180, 200, 225, 240, 300, 360, 400, 450, 600, 720, 900, 1200, 1800, 3600, 5689, 11378, 17067, 22756, 28445, 34134, 45512, 51201, 56890, 68268, 85335, 91024, 102402, 113780, 136536, 142225, 170670, 204804, 227560, 256005, 273072, 284450, 341340, 409608, 426675, 455120, 512010, 568900, 682680, 819216, 853350, 1024020, 1137800, 1280025, 1365360, 1706700, 2048040, 2275600, 2560050, 3413400, 4096080, 5120100, 6826800, 10240200, 20480400]

約数ペア:

[(1, 20480400), (2, 10240200), (3, 6826800), (4, 5120100), (5, 4096080), (6, 3413400), (8, 2560050), (9, 2275600), (10, 2048040), (12, 1706700), (15, 1365360), (16, 1280025), (18, 1137800), (20, 1024020), (24, 853350), (25, 819216), (30, 682680), (36, 568900), (40, 512010), (45, 455120), (48, 426675), (50, 409608), (60, 341340), (72, 284450), (75, 273072), (80, 256005), (90, 227560), (100, 204804), (120, 170670), (144, 142225), (150, 136536), (180, 113780), (200, 102402), (225, 91024), (240, 85335), (300, 68268), (360, 56890), (400, 51201), (450, 45512), (600, 34134), (720, 28445), (900, 22756), (1200, 17067), (1800, 11378), (3600, 5689)]