21272272

素因数分解:

$2^4\times 7^2\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:696

約数の個数: 60

約数和(自身を含む): 49136736

約数和(自身を除く): 27864464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 49, 56, 86, 98, 112, 172, 196, 301, 344, 392, 602, 631, 688, 784, 1204, 1262, 2107, 2408, 2524, 4214, 4417, 4816, 5048, 8428, 8834, 10096, 16856, 17668, 27133, 30919, 33712, 35336, 54266, 61838, 70672, 108532, 123676, 189931, 217064, 247352, 379862, 434128, 494704, 759724, 1329517, 1519448, 2659034, 3038896, 5318068, 10636136, 21272272]

約数ペア:

[(1, 21272272), (2, 10636136), (4, 5318068), (7, 3038896), (8, 2659034), (14, 1519448), (16, 1329517), (28, 759724), (43, 494704), (49, 434128), (56, 379862), (86, 247352), (98, 217064), (112, 189931), (172, 123676), (196, 108532), (301, 70672), (344, 61838), (392, 54266), (602, 35336), (631, 33712), (688, 30919), (784, 27133), (1204, 17668), (1262, 16856), (2107, 10096), (2408, 8834), (2524, 8428), (4214, 5048), (4417, 4816)]