20123144

素因数分解:

$2^3\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 38966400

約数和(自身を除く): 18843256

約数列:

[1, 2, 4, 8, 47, 94, 109, 188, 218, 376, 436, 491, 872, 982, 1964, 3928, 5123, 10246, 20492, 23077, 40984, 46154, 53519, 92308, 107038, 184616, 214076, 428152, 2515393, 5030786, 10061572, 20123144]

約数ペア:

[(1, 20123144), (2, 10061572), (4, 5030786), (8, 2515393), (47, 428152), (94, 214076), (109, 184616), (188, 107038), (218, 92308), (376, 53519), (436, 46154), (491, 40984), (872, 23077), (982, 20492), (1964, 10246), (3928, 5123)]