254148920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{147761}}^1$

素因数の和:147815

約数の個数: 32

約数和(自身を含む): 585137520

約数和(自身を除く): 330988600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 147761, 295522, 591044, 738805, 1182088, 1477610, 2955220, 5910440, 6353723, 12707446, 25414892, 31768615, 50829784, 63537230, 127074460, 254148920]

約数ペア:

[(1, 254148920), (2, 127074460), (4, 63537230), (5, 50829784), (8, 31768615), (10, 25414892), (20, 12707446), (40, 6353723), (43, 5910440), (86, 2955220), (172, 1477610), (215, 1182088), (344, 738805), (430, 591044), (860, 295522), (1720, 147761)]