21457260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10837}}^1$

素因数の和:10863

約数の個数: 72

約数和(自身を含む): 71010576

約数和(自身を除く): 49553316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10837, 21674, 32511, 43348, 54185, 65022, 97533, 108370, 119207, 130044, 162555, 195066, 216740, 238414, 325110, 357621, 390132, 476828, 487665, 596035, 650220, 715242, 975330, 1072863, 1192070, 1430484, 1788105, 1950660, 2145726, 2384140, 3576210, 4291452, 5364315, 7152420, 10728630, 21457260]

約数ペア:

[(1, 21457260), (2, 10728630), (3, 7152420), (4, 5364315), (5, 4291452), (6, 3576210), (9, 2384140), (10, 2145726), (11, 1950660), (12, 1788105), (15, 1430484), (18, 1192070), (20, 1072863), (22, 975330), (30, 715242), (33, 650220), (36, 596035), (44, 487665), (45, 476828), (55, 390132), (60, 357621), (66, 325110), (90, 238414), (99, 216740), (110, 195066), (132, 162555), (165, 130044), (180, 119207), (198, 108370), (220, 97533), (330, 65022), (396, 54185), (495, 43348), (660, 32511), (990, 21674), (1980, 10837)]