128280520

素因数分解:

$2^3\times 5^1\times {\mathrm{3207013}}^1$

素因数の和:3207024

約数の個数: 16

約数和(自身を含む): 288631260

約数和(自身を除く): 160350740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3207013, 6414026, 12828052, 16035065, 25656104, 32070130, 64140260, 128280520]

約数ペア:

[(1, 128280520), (2, 64140260), (4, 32070130), (5, 25656104), (8, 16035065), (10, 12828052), (20, 6414026), (40, 3207013)]