21002968

素因数分解:

$2^3\times 7^2\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 46272600

約数和(自身を除く): 25269632

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 131, 196, 262, 392, 409, 524, 818, 917, 1048, 1636, 1834, 2863, 3272, 3668, 5726, 6419, 7336, 11452, 12838, 20041, 22904, 25676, 40082, 51352, 53579, 80164, 107158, 160328, 214316, 375053, 428632, 750106, 1500212, 2625371, 3000424, 5250742, 10501484, 21002968]

約数ペア:

[(1, 21002968), (2, 10501484), (4, 5250742), (7, 3000424), (8, 2625371), (14, 1500212), (28, 750106), (49, 428632), (56, 375053), (98, 214316), (131, 160328), (196, 107158), (262, 80164), (392, 53579), (409, 51352), (524, 40082), (818, 25676), (917, 22904), (1048, 20041), (1636, 12838), (1834, 11452), (2863, 7336), (3272, 6419), (3668, 5726)]