21978900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{24421}}^1$

素因数の和:24441

約数の個数: 54

約数和(自身を含む): 68894462

約数和(自身を除く): 46915562

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, 24421, 48842, 73263, 97684, 122105, 146526, 219789, 244210, 293052, 366315, 439578, 488420, 610525, 732630, 879156, 1098945, 1221050, 1465260, 1831575, 2197890, 2442100, 3663150, 4395780, 5494725, 7326300, 10989450, 21978900]

約数ペア:

[(1, 21978900), (2, 10989450), (3, 7326300), (4, 5494725), (5, 4395780), (6, 3663150), (9, 2442100), (10, 2197890), (12, 1831575), (15, 1465260), (18, 1221050), (20, 1098945), (25, 879156), (30, 732630), (36, 610525), (45, 488420), (50, 439578), (60, 366315), (75, 293052), (90, 244210), (100, 219789), (150, 146526), (180, 122105), (225, 97684), (300, 73263), (450, 48842), (900, 24421)]