21221280

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14737}}^1$

素因数の和:14758

約数の個数: 72

約数和(自身を含む): 72422532

約数和(自身を除く): 51201252

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14737, 29474, 44211, 58948, 73685, 88422, 117896, 132633, 147370, 176844, 221055, 235792, 265266, 294740, 353688, 442110, 471584, 530532, 589480, 663165, 707376, 884220, 1061064, 1178960, 1326330, 1414752, 1768440, 2122128, 2357920, 2652660, 3536880, 4244256, 5305320, 7073760, 10610640, 21221280]

約数ペア:

[(1, 21221280), (2, 10610640), (3, 7073760), (4, 5305320), (5, 4244256), (6, 3536880), (8, 2652660), (9, 2357920), (10, 2122128), (12, 1768440), (15, 1414752), (16, 1326330), (18, 1178960), (20, 1061064), (24, 884220), (30, 707376), (32, 663165), (36, 589480), (40, 530532), (45, 471584), (48, 442110), (60, 353688), (72, 294740), (80, 265266), (90, 235792), (96, 221055), (120, 176844), (144, 147370), (160, 132633), (180, 117896), (240, 88422), (288, 73685), (360, 58948), (480, 44211), (720, 29474), (1440, 14737)]