128433040

素因数分解:

$2^4\times 5^1\times {\mathrm{1605413}}^1$

素因数の和:1605426

約数の個数: 20

約数和(自身を含む): 298607004

約数和(自身を除く): 170173964

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1605413, 3210826, 6421652, 8027065, 12843304, 16054130, 25686608, 32108260, 64216520, 128433040]

約数ペア:

[(1, 128433040), (2, 64216520), (4, 32108260), (5, 25686608), (8, 16054130), (10, 12843304), (16, 8027065), (20, 6421652), (40, 3210826), (80, 1605413)]