394209040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{69403}}^1$

素因数の和:69487

約数の個数: 40

約数和(自身を含む): 929458368

約数和(自身を除く): 535249328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 69403, 138806, 277612, 347015, 555224, 694030, 1110448, 1388060, 2776120, 4927613, 5552240, 9855226, 19710452, 24638065, 39420904, 49276130, 78841808, 98552260, 197104520, 394209040]

約数ペア:

[(1, 394209040), (2, 197104520), (4, 98552260), (5, 78841808), (8, 49276130), (10, 39420904), (16, 24638065), (20, 19710452), (40, 9855226), (71, 5552240), (80, 4927613), (142, 2776120), (284, 1388060), (355, 1110448), (568, 694030), (710, 555224), (1136, 347015), (1420, 277612), (2840, 138806), (5680, 69403)]