21151928

素因数分解:

$2^3\times 7^2\times {\mathrm{53959}}^1$

素因数の和:53979

約数の個数: 24

約数和(自身を含む): 46135800

約数和(自身を除く): 24983872

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53959, 107918, 215836, 377713, 431672, 755426, 1510852, 2643991, 3021704, 5287982, 10575964, 21151928]

約数ペア:

[(1, 21151928), (2, 10575964), (4, 5287982), (7, 3021704), (8, 2643991), (14, 1510852), (28, 755426), (49, 431672), (56, 377713), (98, 215836), (196, 107918), (392, 53959)]