81215000

素因数分解:

$2^3\times 5^4\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:502

約数の個数: 80

約数和(自身を含む): 195874800

約数和(自身を除く): 114659800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 125, 148, 185, 200, 250, 296, 370, 439, 500, 625, 740, 878, 925, 1000, 1250, 1480, 1756, 1850, 2195, 2500, 3512, 3700, 4390, 4625, 5000, 7400, 8780, 9250, 10975, 16243, 17560, 18500, 21950, 23125, 32486, 37000, 43900, 46250, 54875, 64972, 81215, 87800, 92500, 109750, 129944, 162430, 185000, 219500, 274375, 324860, 406075, 439000, 548750, 649720, 812150, 1097500, 1624300, 2030375, 2195000, 3248600, 4060750, 8121500, 10151875, 16243000, 20303750, 40607500, 81215000]

約数ペア:

[(1, 81215000), (2, 40607500), (4, 20303750), (5, 16243000), (8, 10151875), (10, 8121500), (20, 4060750), (25, 3248600), (37, 2195000), (40, 2030375), (50, 1624300), (74, 1097500), (100, 812150), (125, 649720), (148, 548750), (185, 439000), (200, 406075), (250, 324860), (296, 274375), (370, 219500), (439, 185000), (500, 162430), (625, 129944), (740, 109750), (878, 92500), (925, 87800), (1000, 81215), (1250, 64972), (1480, 54875), (1756, 46250), (1850, 43900), (2195, 37000), (2500, 32486), (3512, 23125), (3700, 21950), (4390, 18500), (4625, 17560), (5000, 16243), (7400, 10975), (8780, 9250)]