280426540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157543}}^1$

素因数の和:157641

約数の個数: 24

約数和(自身を含む): 595516320

約数和(自身を除く): 315089780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 157543, 315086, 630172, 787715, 1575430, 3150860, 14021327, 28042654, 56085308, 70106635, 140213270, 280426540]

約数ペア:

[(1, 280426540), (2, 140213270), (4, 70106635), (5, 56085308), (10, 28042654), (20, 14021327), (89, 3150860), (178, 1575430), (356, 787715), (445, 630172), (890, 315086), (1780, 157543)]