31500

素因数分解:

$2^2\times 3^2\times 5^3\times 7^1$

素因数の和:32

約数の個数: 72

約数和(自身を含む): 113568

約数和(自身を除く): 82068

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 125, 126, 140, 150, 175, 180, 210, 225, 250, 252, 300, 315, 350, 375, 420, 450, 500, 525, 630, 700, 750, 875, 900, 1050, 1125, 1260, 1500, 1575, 1750, 2100, 2250, 2625, 3150, 3500, 4500, 5250, 6300, 7875, 10500, 15750, 31500]

約数ペア:

[(1, 31500), (2, 15750), (3, 10500), (4, 7875), (5, 6300), (6, 5250), (7, 4500), (9, 3500), (10, 3150), (12, 2625), (14, 2250), (15, 2100), (18, 1750), (20, 1575), (21, 1500), (25, 1260), (28, 1125), (30, 1050), (35, 900), (36, 875), (42, 750), (45, 700), (50, 630), (60, 525), (63, 500), (70, 450), (75, 420), (84, 375), (90, 350), (100, 315), (105, 300), (125, 252), (126, 250), (140, 225), (150, 210), (175, 180)]