161373020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{90659}}^1$

素因数の和:90757

約数の個数: 24

約数和(自身を含む): 342694800

約数和(自身を除く): 181321780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 90659, 181318, 362636, 453295, 906590, 1813180, 8068651, 16137302, 32274604, 40343255, 80686510, 161373020]

約数ペア:

[(1, 161373020), (2, 80686510), (4, 40343255), (5, 32274604), (10, 16137302), (20, 8068651), (89, 1813180), (178, 906590), (356, 453295), (445, 362636), (890, 181318), (1780, 90659)]