128881300

素因数分解:

$2^2\times 5^2\times {\mathrm{157}}^1\times {\mathrm{8209}}^1$

素因数の和:8380

約数の個数: 36

約数和(自身を含む): 281488060

約数和(自身を除く): 152606760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 157, 314, 628, 785, 1570, 3140, 3925, 7850, 8209, 15700, 16418, 32836, 41045, 82090, 164180, 205225, 410450, 820900, 1288813, 2577626, 5155252, 6444065, 12888130, 25776260, 32220325, 64440650, 128881300]

約数ペア:

[(1, 128881300), (2, 64440650), (4, 32220325), (5, 25776260), (10, 12888130), (20, 6444065), (25, 5155252), (50, 2577626), (100, 1288813), (157, 820900), (314, 410450), (628, 205225), (785, 164180), (1570, 82090), (3140, 41045), (3925, 32836), (7850, 16418), (8209, 15700)]