20407500

素因数分解:

$2^2\times 3^2\times 5^4\times {\mathrm{907}}^1$

素因数の和:937

約数の個数: 90

約数和(自身を含む): 64532468

約数和(自身を除く): 44124968

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 625, 750, 900, 907, 1125, 1250, 1500, 1814, 1875, 2250, 2500, 2721, 3628, 3750, 4500, 4535, 5442, 5625, 7500, 8163, 9070, 10884, 11250, 13605, 16326, 18140, 22500, 22675, 27210, 32652, 40815, 45350, 54420, 68025, 81630, 90700, 113375, 136050, 163260, 204075, 226750, 272100, 340125, 408150, 453500, 566875, 680250, 816300, 1020375, 1133750, 1360500, 1700625, 2040750, 2267500, 3401250, 4081500, 5101875, 6802500, 10203750, 20407500]

約数ペア:

[(1, 20407500), (2, 10203750), (3, 6802500), (4, 5101875), (5, 4081500), (6, 3401250), (9, 2267500), (10, 2040750), (12, 1700625), (15, 1360500), (18, 1133750), (20, 1020375), (25, 816300), (30, 680250), (36, 566875), (45, 453500), (50, 408150), (60, 340125), (75, 272100), (90, 226750), (100, 204075), (125, 163260), (150, 136050), (180, 113375), (225, 90700), (250, 81630), (300, 68025), (375, 54420), (450, 45350), (500, 40815), (625, 32652), (750, 27210), (900, 22675), (907, 22500), (1125, 18140), (1250, 16326), (1500, 13605), (1814, 11250), (1875, 10884), (2250, 9070), (2500, 8163), (2721, 7500), (3628, 5625), (3750, 5442), (4500, 4535)]