21181500

素因数分解:

$2^2\times 3^4\times 5^3\times {\mathrm{523}}^1$

素因数の和:554

約数の個数: 120

約数和(自身を含む): 69237168

約数和(自身を除く): 48055668

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 225, 250, 270, 300, 324, 375, 405, 450, 500, 523, 540, 675, 750, 810, 900, 1046, 1125, 1350, 1500, 1569, 1620, 2025, 2092, 2250, 2615, 2700, 3138, 3375, 4050, 4500, 4707, 5230, 6276, 6750, 7845, 8100, 9414, 10125, 10460, 13075, 13500, 14121, 15690, 18828, 20250, 23535, 26150, 28242, 31380, 39225, 40500, 42363, 47070, 52300, 56484, 65375, 70605, 78450, 84726, 94140, 117675, 130750, 141210, 156900, 169452, 196125, 211815, 235350, 261500, 282420, 353025, 392250, 423630, 470700, 588375, 706050, 784500, 847260, 1059075, 1176750, 1412100, 1765125, 2118150, 2353500, 3530250, 4236300, 5295375, 7060500, 10590750, 21181500]

約数ペア:

[(1, 21181500), (2, 10590750), (3, 7060500), (4, 5295375), (5, 4236300), (6, 3530250), (9, 2353500), (10, 2118150), (12, 1765125), (15, 1412100), (18, 1176750), (20, 1059075), (25, 847260), (27, 784500), (30, 706050), (36, 588375), (45, 470700), (50, 423630), (54, 392250), (60, 353025), (75, 282420), (81, 261500), (90, 235350), (100, 211815), (108, 196125), (125, 169452), (135, 156900), (150, 141210), (162, 130750), (180, 117675), (225, 94140), (250, 84726), (270, 78450), (300, 70605), (324, 65375), (375, 56484), (405, 52300), (450, 47070), (500, 42363), (523, 40500), (540, 39225), (675, 31380), (750, 28242), (810, 26150), (900, 23535), (1046, 20250), (1125, 18828), (1350, 15690), (1500, 14121), (1569, 13500), (1620, 13075), (2025, 10460), (2092, 10125), (2250, 9414), (2615, 8100), (2700, 7845), (3138, 6750), (3375, 6276), (4050, 5230), (4500, 4707)]