128225840

素因数分解:

$2^4\times 5^1\times {\mathrm{1602823}}^1$

素因数の和:1602836

約数の個数: 20

約数和(自身を含む): 298125264

約数和(自身を除く): 169899424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1602823, 3205646, 6411292, 8014115, 12822584, 16028230, 25645168, 32056460, 64112920, 128225840]

約数ペア:

[(1, 128225840), (2, 64112920), (4, 32056460), (5, 25645168), (8, 16028230), (10, 12822584), (16, 8014115), (20, 6411292), (40, 3205646), (80, 1602823)]