21573328

素因数分解:

$2^4\times 7^3\times {\mathrm{3931}}^1$

素因数の和:3960

約数の個数: 40

約数和(自身を含む): 48756800

約数和(自身を除く): 27183472

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 3931, 5488, 7862, 15724, 27517, 31448, 55034, 62896, 110068, 192619, 220136, 385238, 440272, 770476, 1348333, 1540952, 2696666, 3081904, 5393332, 10786664, 21573328]

約数ペア:

[(1, 21573328), (2, 10786664), (4, 5393332), (7, 3081904), (8, 2696666), (14, 1540952), (16, 1348333), (28, 770476), (49, 440272), (56, 385238), (98, 220136), (112, 192619), (196, 110068), (343, 62896), (392, 55034), (686, 31448), (784, 27517), (1372, 15724), (2744, 7862), (3931, 5488)]