21297500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{1217}}^1$

素因数の和:1248

約数の個数: 60

約数和(自身を含む): 53270448

約数和(自身を除く): 31972948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 625, 700, 875, 1217, 1250, 1750, 2434, 2500, 3500, 4375, 4868, 6085, 8519, 8750, 12170, 17038, 17500, 24340, 30425, 34076, 42595, 60850, 85190, 121700, 152125, 170380, 212975, 304250, 425950, 608500, 760625, 851900, 1064875, 1521250, 2129750, 3042500, 4259500, 5324375, 10648750, 21297500]

約数ペア:

[(1, 21297500), (2, 10648750), (4, 5324375), (5, 4259500), (7, 3042500), (10, 2129750), (14, 1521250), (20, 1064875), (25, 851900), (28, 760625), (35, 608500), (50, 425950), (70, 304250), (100, 212975), (125, 170380), (140, 152125), (175, 121700), (250, 85190), (350, 60850), (500, 42595), (625, 34076), (700, 30425), (875, 24340), (1217, 17500), (1250, 17038), (1750, 12170), (2434, 8750), (2500, 8519), (3500, 6085), (4375, 4868)]