81171900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{90191}}^1$

素因数の和:90211

約数の個数: 54

約数和(自身を含む): 254431632

約数和(自身を除く): 173259732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 90191, 180382, 270573, 360764, 450955, 541146, 811719, 901910, 1082292, 1352865, 1623438, 1803820, 2254775, 2705730, 3246876, 4058595, 4509550, 5411460, 6764325, 8117190, 9019100, 13528650, 16234380, 20292975, 27057300, 40585950, 81171900]

約数ペア:

[(1, 81171900), (2, 40585950), (3, 27057300), (4, 20292975), (5, 16234380), (6, 13528650), (9, 9019100), (10, 8117190), (12, 6764325), (15, 5411460), (18, 4509550), (20, 4058595), (25, 3246876), (30, 2705730), (36, 2254775), (45, 1803820), (50, 1623438), (60, 1352865), (75, 1082292), (90, 901910), (100, 811719), (150, 541146), (180, 450955), (225, 360764), (300, 270573), (450, 180382), (900, 90191)]