19456240

素因数分解:

$2^4\times 5^1\times {\mathrm{243203}}^1$

素因数の和:243216

約数の個数: 20

約数和(自身を含む): 45235944

約数和(自身を除く): 25779704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243203, 486406, 972812, 1216015, 1945624, 2432030, 3891248, 4864060, 9728120, 19456240]

約数ペア:

[(1, 19456240), (2, 9728120), (4, 4864060), (5, 3891248), (8, 2432030), (10, 1945624), (16, 1216015), (20, 972812), (40, 486406), (80, 243203)]