21365176

素因数分解:

$2^3\times 7^2\times {\mathrm{54503}}^1$

素因数の和:54523

約数の個数: 24

約数和(自身を含む): 46600920

約数和(自身を除く): 25235744

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 54503, 109006, 218012, 381521, 436024, 763042, 1526084, 2670647, 3052168, 5341294, 10682588, 21365176]

約数ペア:

[(1, 21365176), (2, 10682588), (4, 5341294), (7, 3052168), (8, 2670647), (14, 1526084), (28, 763042), (49, 436024), (56, 381521), (98, 218012), (196, 109006), (392, 54503)]