21712635

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:297

約数の個数: 72

約数和(自身を含む): 44993520

約数和(自身を除く): 23280885

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 49, 63, 105, 129, 147, 215, 229, 245, 301, 315, 387, 441, 645, 687, 735, 903, 1145, 1505, 1603, 1935, 2061, 2107, 2205, 2709, 3435, 4515, 4809, 6321, 8015, 9847, 10305, 10535, 11221, 13545, 14427, 18963, 24045, 29541, 31605, 33663, 49235, 56105, 68929, 72135, 88623, 94815, 100989, 147705, 168315, 206787, 344645, 443115, 482503, 504945, 620361, 1033935, 1447509, 2412515, 3101805, 4342527, 7237545, 21712635]

約数ペア:

[(1, 21712635), (3, 7237545), (5, 4342527), (7, 3101805), (9, 2412515), (15, 1447509), (21, 1033935), (35, 620361), (43, 504945), (45, 482503), (49, 443115), (63, 344645), (105, 206787), (129, 168315), (147, 147705), (215, 100989), (229, 94815), (245, 88623), (301, 72135), (315, 68929), (387, 56105), (441, 49235), (645, 33663), (687, 31605), (735, 29541), (903, 24045), (1145, 18963), (1505, 14427), (1603, 13545), (1935, 11221), (2061, 10535), (2107, 10305), (2205, 9847), (2709, 8015), (3435, 6321), (4515, 4809)]